11402131021 has 16 divisors (see below), whose sum is σ = 12535251840. Its totient is φ = 10323149760.

The previous prime is 11402131009. The next prime is 11402131093. The reversal of 11402131021 is 12013120411.

It is a cyclic number.

It is not a de Polignac number, because 11402131021 - 2⁵ = 11402130989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11402130986 and 11402131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402161021) 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, 505051 + ... + 527143.

It is an arithmetic number, because the mean of its divisors is an integer number (783453240).

Almost surely, 2^11402131021 is an apocalyptic number.

It is an amenable number.

11402131021 is a deficient number, since it is larger than the sum of its proper divisors (1133120819).

11402131021 is a wasteful number, since it uses less digits than its factorization.

11402131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23316.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11402131021 its reverse (12013120411), we get a palindrome (23415251432).

The spelling of 11402131021 in words is "eleven billion, four hundred two million, one hundred thirty-one thousand, twenty-one".