122011100021 has 8 divisors (see below), whose sum is σ = 123120261120. Its totient is φ = 120904258608.

The previous prime is 122011100011. The next prime is 122011100023. The reversal of 122011100021 is 120001110221.

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 122011100021 - 2¹⁰ = 122011098997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122011099975 and 122011100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011100023) 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, 474161 + ... + 684726.

It is an arithmetic number, because the mean of its divisors is an integer number (15390032640).

Almost surely, 2^122011100021 is an apocalyptic number.

It is an amenable number.

122011100021 is a deficient number, since it is larger than the sum of its proper divisors (1109161099).

122011100021 is a wasteful number, since it uses less digits than its factorization.

122011100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159843.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122011100021 its reverse (120001110221), we get a palindrome (242012210242).

The spelling of 122011100021 in words is "one hundred twenty-two billion, eleven million, one hundred thousand, twenty-one".