2131212502 has 4 divisors (see below), whose sum is σ = 3196818756. Its totient is φ = 1065606250.

The previous prime is 2131212439. The next prime is 2131212529. The reversal of 2131212502 is 2052121312.

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

It is a super-2 number, since 2×2131212502² = 9084133457362200008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2131212502.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 532803124 + ... + 532803127.

It is an arithmetic number, because the mean of its divisors is an integer number (799204689).

Almost surely, 2^2131212502 is an apocalyptic number.

2131212502 is a deficient number, since it is larger than the sum of its proper divisors (1065606254).

2131212502 is a wasteful number, since it uses less digits than its factorization.

2131212502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065606253.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2131212502 is about 46165.0571536525. The cubic root of 2131212502 is about 1286.8924463365.

Adding to 2131212502 its reverse (2052121312), we get a palindrome (4183333814).

The spelling of 2131212502 in words is "two billion, one hundred thirty-one million, two hundred twelve thousand, five hundred two".