122002110100021 has 4 divisors (see below), whose sum is σ = 122002944785344. Its totient is φ = 122001275414700.

The previous prime is 122002110100001. The next prime is 122002110100037. The reversal of 122002110100021 is 120001011200221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122002110100021 - 2⁷ = 122002110099893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122002110099974 and 122002110100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002110100001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417123375 + ... + 417415756.

It is an arithmetic number, because the mean of its divisors is an integer number (30500736196336).

Almost surely, 2^{122002110100021} is an apocalyptic number.

It is an amenable number.

122002110100021 is a deficient number, since it is larger than the sum of its proper divisors (834685323).

122002110100021 is an equidigital number, since it uses as much as digits as its factorization.

122002110100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834685322.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122002110100021 its reverse (120001011200221), we get a palindrome (242003121300242).

The spelling of 122002110100021 in words is "one hundred twenty-two trillion, two billion, one hundred ten million, one hundred thousand, twenty-one".