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120202221220021 = 139910394997713
BaseRepresentation
bin11011010101001011000010…
…101100100111000010110101
3120202121012221110200101111001
4123111023002230213002311
5111223343122113020041
61103352045455243301
734214216045200243
oct3325130254470265
9522535843611431
10120202221220021
1135333526238936
1211593bb4819531
13520c03699a005
142197b66153793
15dd6b07ad9131
hex6d52c2b270b5

120202221220021 has 8 divisors (see below), whose sum is σ = 121080286355840. Its totient is φ = 119324346098112.

The previous prime is 120202221219937. The next prime is 120202221220073. The reversal of 120202221220021 is 120022122202021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120202221220021 - 211 = 120202221217973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120202221200021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46233540 + ... + 48764173.

It is an arithmetic number, because the mean of its divisors is an integer number (15135035794480).

Almost surely, 2120202221220021 is an apocalyptic number.

It is an amenable number.

120202221220021 is a deficient number, since it is larger than the sum of its proper divisors (878065135819).

120202221220021 is an equidigital number, since it uses as much as digits as its factorization.

120202221220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95006955.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 120202221220021 its reverse (120022122202021), we get a palindrome (240224343422042).

The spelling of 120202221220021 in words is "one hundred twenty trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, twenty-one".

Divisors: 1 139 9103 1265317 94997713 13204682107 864764181439 120202221220021