11231015421 has 8 divisors (see below), whose sum is σ = 15107207040. Its totient is φ = 7421083712.

The previous prime is 11231015417. The next prime is 11231015443. The reversal of 11231015421 is 12451013211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231015421 - 2² = 11231015417 is a prime.

It is a super-2 number, since 2×11231015421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231015021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16564581 + ... + 16565258.

It is an arithmetic number, because the mean of its divisors is an integer number (1888400880).

Almost surely, 2^11231015421 is an apocalyptic number.

It is an amenable number.

11231015421 is a deficient number, since it is larger than the sum of its proper divisors (3876191619).

11231015421 is a wasteful number, since it uses less digits than its factorization.

11231015421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33129955.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11231015421 its reverse (12451013211), we get a palindrome (23682028632).

The spelling of 11231015421 in words is "eleven billion, two hundred thirty-one million, fifteen thousand, four hundred twenty-one".