121023013212 has 36 divisors (see below), whose sum is σ = 307972446600. Its totient is φ = 40070257632.

The previous prime is 121023013207. The next prime is 121023013217. The reversal of 121023013212 is 212310320121.

121023013212 is a `hidden beast` number, since 1 + 210 + 230 + 13 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (121023013207) and next prime (121023013217).

It is a tau number, because it is divible by the number of its divisors (36).

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 (121023013217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11275678 + ... + 11286405.

Almost surely, 2^121023013212 is an apocalyptic number.

121023013212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121023013212 is an abundant number, since it is smaller than the sum of its proper divisors (186949433388).

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

121023013212 is a wasteful number, since it uses less digits than its factorization.

121023013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22562242 (or 22562237 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121023013212 its reverse (212310320121), we get a palindrome (333333333333).

The spelling of 121023013212 in words is "one hundred twenty-one billion, twenty-three million, thirteen thousand, two hundred twelve".