121021020221112 has 96 divisors (see below), whose sum is σ = 357591962407680. Its totient is φ = 36669974153280.

The previous prime is 121021020221107. The next prime is 121021020221117. The reversal of 121021020221112 is 211122020120121.

121021020221112 is a `hidden beast` number, since 1 + 210 + 210 + 20 + 2 + 211 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (121021020221107) and next prime (121021020221117).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021020221117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3119953 + ... + 15867455.

It is an arithmetic number, because the mean of its divisors is an integer number (3724916275080).

Almost surely, 2^{121021020221112} is an apocalyptic number.

121021020221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121021020221112 is an abundant number, since it is smaller than the sum of its proper divisors (236570942186568).

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

121021020221112 is a wasteful number, since it uses less digits than its factorization.

121021020221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12759513 (or 12759506 counting only the distinct ones).

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

Adding to 121021020221112 its reverse (211122020120121), we get a palindrome (332143040341233).

The spelling of 121021020221112 in words is "one hundred twenty-one trillion, twenty-one billion, twenty million, two hundred twenty-one thousand, one hundred twelve".