121012120101200 has 60 divisors (see below), whose sum is σ = 296917397707200. Its totient is φ = 47374957649280.

The previous prime is 121012120101181. The next prime is 121012120101227. The reversal of 121012120101200 is 2101021210121.

It is a super-2 number, since 2×121012120101200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3218388650 + ... + 3218426249.

It is an arithmetic number, because the mean of its divisors is an integer number (4948623295120).

Almost surely, 2^{121012120101200} is an apocalyptic number.

121012120101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012120101200 is an abundant number, since it is smaller than the sum of its proper divisors (175905277606000).

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

121012120101200 is a wasteful number, since it uses less digits than its factorization.

121012120101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436814964 (or 6436814953 counting only the distinct ones).

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

Adding to 121012120101200 its reverse (2101021210121), we get a palindrome (123113141311321).

The spelling of 121012120101200 in words is "one hundred twenty-one trillion, twelve billion, one hundred twenty million, one hundred one thousand, two hundred".