121021201220112 has 100 divisors (see below), whose sum is σ = 357723030736896. Its totient is φ = 39482093995200.

The previous prime is 121021201220107. The next prime is 121021201220141. The reversal of 121021201220112 is 211022102120121.

121021201220112 is a `hidden beast` number, since 1 + 210 + 2 + 120 + 1 + 220 + 112 = 666.

It is a super-2 number, since 2×121021201220112² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 993349264 + ... + 993471087.

Almost surely, 2^{121021201220112} is an apocalyptic number.

121021201220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121021201220112 is an abundant number, since it is smaller than the sum of its proper divisors (236701829516784).

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

121021201220112 is a wasteful number, since it uses less digits than its factorization.

121021201220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986820418 (or 1986820403 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121021201220112 its reverse (211022102120121), we get a palindrome (332043303340233).

Subtracting 121021201220112 from its reverse (211022102120121), we obtain a palindrome (90000900900009).

The spelling of 121021201220112 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred one million, two hundred twenty thousand, one hundred twelve".