52139216121002 has 16 divisors (see below), whose sum is σ = 79281079679880. Its totient is φ = 25712197684992.

The previous prime is 52139216120933. The next prime is 52139216121011. The reversal of 52139216121002 is 20012161293125.

It is a Cunningham number, because it is equal to 7220749²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 29596766164681 + 22542449956321 = 5440291^2 + 4747889^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11140718 + ... + 15112710.

Almost surely, 2^{52139216121002} is an apocalyptic number.

52139216121002 is a deficient number, since it is larger than the sum of its proper divisors (27141863558878).

52139216121002 is a wasteful number, since it uses less digits than its factorization.

52139216121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061977.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 52139216121002 in words is "fifty-two trillion, one hundred thirty-nine billion, two hundred sixteen million, one hundred twenty-one thousand, two".