121112102010 has 64 divisors (see below), whose sum is σ = 291315087360. Its totient is φ = 32224865280.

The previous prime is 121112102009. The next prime is 121112102011. The reversal of 121112102010 is 10201211121.

It is an interprime number because it is at equal distance from previous prime (121112102009) and next prime (121112102011).

It is not an unprimeable number, because it can be changed into a prime (121112102011) 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, 46419586 + ... + 46422194.

It is an arithmetic number, because the mean of its divisors is an integer number (4551798240).

Almost surely, 2^121112102010 is an apocalyptic number.

121112102010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112102010 is an abundant number, since it is smaller than the sum of its proper divisors (170202985350).

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

121112102010 is a wasteful number, since it uses less digits than its factorization.

121112102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121112102010 its reverse (10201211121), we get a palindrome (131313313131).

The spelling of 121112102010 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred two thousand, ten".