122111212100020 has 96 divisors (see below), whose sum is σ = 301269443529600. Its totient is φ = 40987717839360.

The previous prime is 122111212099999. The next prime is 122111212100023. The reversal of 122111212100020 is 20001212111221.

It is a super-2 number, since 2×122111212100020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111212099967 and 122111212100003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111212100023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196741294 + ... + 197360986.

It is an arithmetic number, because the mean of its divisors is an integer number (3138223370100).

Almost surely, 2^{122111212100020} is an apocalyptic number.

122111212100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111212100020 is an abundant number, since it is smaller than the sum of its proper divisors (179158231429580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122111212100020 is a wasteful number, since it uses less digits than its factorization.

122111212100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688625 (or 688623 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122111212100020 its reverse (20001212111221), we get a palindrome (142112424211241).

The spelling of 122111212100020 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twelve million, one hundred thousand, twenty".