121420136052 has 24 divisors (see below), whose sum is σ = 314792945600. Its totient is φ = 40473378648.

The previous prime is 121420136051. The next prime is 121420136077. The reversal of 121420136052 is 250631024121.

121420136052 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 0 + 13 + 605 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420136051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562130152 + ... + 562130367.

Almost surely, 2^121420136052 is an apocalyptic number.

121420136052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121420136052 is an abundant number, since it is smaller than the sum of its proper divisors (193372809548).

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

121420136052 is a wasteful number, since it uses less digits than its factorization.

121420136052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124260532 (or 1124260524 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 121420136052 in words is "one hundred twenty-one billion, four hundred twenty million, one hundred thirty-six thousand, fifty-two".