122021211012221 has 8 divisors (see below), whose sum is σ = 122413966481664. Its totient is φ = 121628458135120.

The previous prime is 122021211012199. The next prime is 122021211012251. The reversal of 122021211012221 is 122210112120221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122021211012221 is a prime.

It is a super-2 number, since 2×122021211012221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122021211012193 and 122021211012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021211012251) 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, 149561420 + ... + 150375066.

It is an arithmetic number, because the mean of its divisors is an integer number (15301745810208).

Almost surely, 2^{122021211012221} is an apocalyptic number.

It is an amenable number.

122021211012221 is a deficient number, since it is larger than the sum of its proper divisors (392755469443).

122021211012221 is an equidigital number, since it uses as much as digits as its factorization.

122021211012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296171.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122021211012221 its reverse (122210112120221), we get a palindrome (244231323132442).

The spelling of 122021211012221 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred eleven million, twelve thousand, two hundred twenty-one".