121010120110 has 96 divisors (see below), whose sum is σ = 261476449920. Its totient is φ = 39874824000.

The previous prime is 121010120083. The next prime is 121010120173. The reversal of 121010120110 is 11021010121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1050885 + ... + 1160335.

It is an arithmetic number, because the mean of its divisors is an integer number (2723713020).

Almost surely, 2^121010120110 is an apocalyptic number.

121010120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121010120110 is an abundant number, since it is smaller than the sum of its proper divisors (140466329810).

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

121010120110 is a wasteful number, since it uses less digits than its factorization.

121010120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109534 (or 109511 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121010120110 its reverse (11021010121), we get a palindrome (132031130231).

The spelling of 121010120110 in words is "one hundred twenty-one billion, ten million, one hundred twenty thousand, one hundred ten".