2129813012131 has 4 divisors (see below), whose sum is σ = 2434072013872. Its totient is φ = 1825554010392.

The previous prime is 2129813012101. The next prime is 2129813012147. The reversal of 2129813012131 is 1312103189212.

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

It is not a de Polignac number, because 2129813012131 - 2¹⁷ = 2129812881059 is a prime.

It is a super-2 number, since 2×2129813012131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129813012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152129500860 + ... + 152129500873.

It is an arithmetic number, because the mean of its divisors is an integer number (608518003468).

Almost surely, 2^{2129813012131} is an apocalyptic number.

2129813012131 is a deficient number, since it is larger than the sum of its proper divisors (304259001741).

2129813012131 is an equidigital number, since it uses as much as digits as its factorization.

2129813012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304259001740.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 2129813012131 in words is "two trillion, one hundred twenty-nine billion, eight hundred thirteen million, twelve thousand, one hundred thirty-one".