11231021272 has 8 divisors (see below), whose sum is σ = 21058164900. Its totient is φ = 5615510632.

The previous prime is 11231021257. The next prime is 11231021281. The reversal of 11231021272 is 27212013211.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11231021272² (a number of 21 digits) contains 22 as substring.

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, 701938822 + ... + 701938837.

Almost surely, 2^11231021272 is an apocalyptic number.

It is an amenable number.

11231021272 is a deficient number, since it is larger than the sum of its proper divisors (9827143628).

11231021272 is a wasteful number, since it uses less digits than its factorization.

11231021272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403877665 (or 1403877661 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 11231021272 its reverse (27212013211), we get a palindrome (38443034483).

The spelling of 11231021272 in words is "eleven billion, two hundred thirty-one million, twenty-one thousand, two hundred seventy-two".