2112153139 has 4 divisors (see below), whose sum is σ = 2112419560. Its totient is φ = 2111886720.

The previous prime is 2112153137. The next prime is 2112153149. The reversal of 2112153139 is 9313512112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2112153139 - 2¹ = 2112153137 is a prime.

It is a super-2 number, since 2×2112153139² = 8922381765175106642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112153137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120942 + ... + 137299.

It is an arithmetic number, because the mean of its divisors is an integer number (528104890).

Almost surely, 2^2112153139 is an apocalyptic number.

2112153139 is a deficient number, since it is larger than the sum of its proper divisors (266421).

2112153139 is an equidigital number, since it uses as much as digits as its factorization.

2112153139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266420.

The product of its digits is 1620, while the sum is 28.

The square root of 2112153139 is about 45958.1672719877. The cubic root of 2112153139 is about 1283.0447412615.

The spelling of 2112153139 in words is "two billion, one hundred twelve million, one hundred fifty-three thousand, one hundred thirty-nine".