1202131312011 has 12 divisors (see below), whose sum is σ = 1984470737392. Its totient is φ = 686932178256.

The previous prime is 1202131311967. The next prime is 1202131312021. The reversal of 1202131312011 is 1102131312021.

1202131312011 is a `hidden beast` number, since 120 + 213 + 131 + 201 + 1 = 666.

It is not a de Polignac number, because 1202131312011 - 2⁷ = 1202131311883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202131312021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9540724636 + ... + 9540724761.

Almost surely, 2^{1202131312011} is an apocalyptic number.

1202131312011 is a deficient number, since it is larger than the sum of its proper divisors (782339425381).

1202131312011 is a wasteful number, since it uses less digits than its factorization.

1202131312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19081449410 (or 19081449407 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1202131312011 its reverse (1102131312021), we get a palindrome (2304262624032).

The spelling of 1202131312011 in words is "one trillion, two hundred two billion, one hundred thirty-one million, three hundred twelve thousand, eleven".