120021212221101 has 8 divisors (see below), whose sum is σ = 177809203290560. Its totient is φ = 80014141480716.

The previous prime is 120021212221073. The next prime is 120021212221121. The reversal of 120021212221101 is 101122212120021.

120021212221101 is a `hidden beast` number, since 1 + 200 + 21 + 212 + 221 + 10 + 1 = 666.

It is not a de Polignac number, because 120021212221101 - 2¹⁵ = 120021212188333 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 (120021212221121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222615041105 + ... + 2222615041158.

It is an arithmetic number, because the mean of its divisors is an integer number (22226150411320).

Almost surely, 2^{120021212221101} is an apocalyptic number.

It is an amenable number.

120021212221101 is a deficient number, since it is larger than the sum of its proper divisors (57787991069459).

120021212221101 is an equidigital number, since it uses as much as digits as its factorization.

120021212221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445230082272 (or 4445230082266 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120021212221101 its reverse (101122212120021), we get a palindrome (221143424341122).

The spelling of 120021212221101 in words is "one hundred twenty trillion, twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred one".