121122112100 has 36 divisors (see below), whose sum is σ = 286729075248. Its totient is φ = 44044404000.

The previous prime is 121122112049. The next prime is 121122112109. The reversal of 121122112100 is 1211221121.

It is not an unprimeable number, because it can be changed into a prime (121122112109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55054406 + ... + 55056605.

Almost surely, 2^121122112100 is an apocalyptic number.

121122112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122112100 is an abundant number, since it is smaller than the sum of its proper divisors (165606963148).

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

121122112100 is a wasteful number, since it uses less digits than its factorization.

121122112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110111036 (or 110111029 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121122112100 its reverse (1211221121), we get a palindrome (122333333221).

121122112100 divided by its reverse (1211221121) gives a square (100 = 10²).

It can be divided in two parts, 12112 and 2112100, that added together give a palindrome (2124212).

The spelling of 121122112100 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred".