2131121151 has 16 divisors (see below), whose sum is σ = 3230641920. Its totient is φ = 1387706040.

The previous prime is 2131121147. The next prime is 2131121159. The reversal of 2131121151 is 1511211312.

It is not a de Polignac number, because 2131121151 - 2² = 2131121147 is a prime.

It is a super-3 number, since 3×2131121151³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131121159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 916635 + ... + 918956.

It is an arithmetic number, because the mean of its divisors is an integer number (201915120).

Almost surely, 2^2131121151 is an apocalyptic number.

2131121151 is a deficient number, since it is larger than the sum of its proper divisors (1099520769).

2131121151 is a wasteful number, since it uses less digits than its factorization.

2131121151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835643 (or 1835637 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 2131121151 is about 46164.0677475458. The cubic root of 2131121151 is about 1286.8740592147.

Adding to 2131121151 its reverse (1511211312), we get a palindrome (3642332463).

The spelling of 2131121151 in words is "two billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred fifty-one".