122221022122021 has 8 divisors (see below), whose sum is σ = 123431396837400. Its totient is φ = 121010652614400.

The previous prime is 122221022122013. The next prime is 122221022122033. The reversal of 122221022122021 is 120221220122221.

It can be written as a sum of positive squares in 4 ways, for example, as 95237007513025 + 26984014608996 = 9758945^2 + 5194614^2 .

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 122221022122021 - 2³ = 122221022122013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221022121983 and 122221022122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221022122091) 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, 60167425 + ... + 62165593.

It is an arithmetic number, because the mean of its divisors is an integer number (15428924604675).

Almost surely, 2^{122221022122021} is an apocalyptic number.

It is an amenable number.

122221022122021 is a deficient number, since it is larger than the sum of its proper divisors (1210374715379).

122221022122021 is a wasteful number, since it uses less digits than its factorization.

122221022122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603879.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 122221022122021 its reverse (120221220122221), we get a palindrome (242442242244242).

The spelling of 122221022122021 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, twenty-one".