122101011000021 has 16 divisors (see below), whose sum is σ = 163061122403520. Its totient is φ = 81270806090880.

The previous prime is 122101010999999. The next prime is 122101011000043. The reversal of 122101011000021 is 120000110101221.

It is an interprime number because it is at equal distance from previous prime (122101010999999) and next prime (122101011000043).

It is not a de Polignac number, because 122101011000021 - 2¹⁰ = 122101010998997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122101010999970 and 122101011000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101011000421) 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, 22981831 + ... + 27791483.

It is an arithmetic number, because the mean of its divisors is an integer number (10191320150220).

Almost surely, 2^{122101011000021} is an apocalyptic number.

It is an amenable number.

122101011000021 is a deficient number, since it is larger than the sum of its proper divisors (40960111403499).

122101011000021 is a wasteful number, since it uses less digits than its factorization.

122101011000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823156.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 122101011000021 its reverse (120000110101221), we get a palindrome (242101121101242).

The spelling of 122101011000021 in words is "one hundred twenty-two trillion, one hundred one billion, eleven million, twenty-one", and thus it is an aban number.