121021102112 has 24 divisors (see below), whose sum is σ = 238781680956. Its totient is φ = 60378135552.

The previous prime is 121021102099. The next prime is 121021102177. The reversal of 121021102112 is 211201120121.

It can be written as a sum of positive squares in 2 ways, for example, as 106487352976 + 14533749136 = 326324^2 + 120556^2 .

It is a super-2 number, since 2×121021102112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4123133 + ... + 4152380.

Almost surely, 2^121021102112 is an apocalyptic number.

It is an amenable number.

121021102112 is a deficient number, since it is larger than the sum of its proper divisors (117760578844).

121021102112 is an equidigital number, since it uses as much as digits as its factorization.

121021102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8275980 (or 8275972 counting only the distinct ones).

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

Adding to 121021102112 its reverse (211201120121), we get a palindrome (332222222233).

The spelling of 121021102112 in words is "one hundred twenty-one billion, twenty-one million, one hundred two thousand, one hundred twelve".