121031022100 has 36 divisors (see below), whose sum is σ = 262720934784. Its totient is φ = 48396995680.

The previous prime is 121031022083. The next prime is 121031022103. The reversal of 121031022100 is 1220130121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031022103) 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, 125619 + ... + 507781.

It is an arithmetic number, because the mean of its divisors is an integer number (7297803744).

Almost surely, 2^121031022100 is an apocalyptic number.

121031022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121031022100 is an abundant number, since it is smaller than the sum of its proper divisors (141689912684).

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

121031022100 is a wasteful number, since it uses less digits than its factorization.

121031022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385344 (or 385337 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121031022100 its reverse (1220130121), we get a palindrome (122251152221).

The spelling of 121031022100 in words is "one hundred twenty-one billion, thirty-one million, twenty-two thousand, one hundred".