122102110220021 has 16 divisors (see below), whose sum is σ = 125602634707200. Its totient is φ = 118661258159808.

The previous prime is 122102110220003. The next prime is 122102110220047. The reversal of 122102110220021 is 120022011201221.

It is a cyclic number.

It is not a de Polignac number, because 122102110220021 - 2²⁶ = 122102043111157 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 (122102110220071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32848886 + ... + 36376551.

It is an arithmetic number, because the mean of its divisors is an integer number (7850164669200).

Almost surely, 2^{122102110220021} is an apocalyptic number.

It is an amenable number.

122102110220021 is a deficient number, since it is larger than the sum of its proper divisors (3500524487179).

122102110220021 is an equidigital number, since it uses as much as digits as its factorization.

122102110220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69225868.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122102110220021 its reverse (120022011201221), we get a palindrome (242124121421242).

The spelling of 122102110220021 in words is "one hundred twenty-two trillion, one hundred two billion, one hundred ten million, two hundred twenty thousand, twenty-one".