2131121302 has 4 divisors (see below), whose sum is σ = 3196681956. Its totient is φ = 1065560650.

The previous prime is 2131121269. The next prime is 2131121387. The reversal of 2131121302 is 2031211312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532780324 + ... + 532780327.

It is an arithmetic number, because the mean of its divisors is an integer number (799170489).

Almost surely, 2^2131121302 is an apocalyptic number.

2131121302 is a deficient number, since it is larger than the sum of its proper divisors (1065560654).

2131121302 is a wasteful number, since it uses less digits than its factorization.

2131121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065560653.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2131121302 is about 46164.0693830169. The cubic root of 2131121302 is about 1286.8740896084.

Adding to 2131121302 its reverse (2031211312), we get a palindrome (4162332614).

The spelling of 2131121302 in words is "two billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred two".