11231221013013 has 8 divisors (see below), whose sum is σ = 15855841430208. Its totient is φ = 7047040635584.

The previous prime is 11231221012969. The next prime is 11231221013017. The reversal of 11231221013013 is 31031012213211.

11231221013013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11231221013013 - 2⁸ = 11231221012757 is a prime.

It is a super-2 number, since 2×11231221013013² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231221013017) 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, 110110009881 + ... + 110110009982.

It is an arithmetic number, because the mean of its divisors is an integer number (1981980178776).

Almost surely, 2^{11231221013013} is an apocalyptic number.

It is an amenable number.

11231221013013 is a deficient number, since it is larger than the sum of its proper divisors (4624620417195).

11231221013013 is a wasteful number, since it uses less digits than its factorization.

11231221013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220220019883.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11231221013013 its reverse (31031012213211), we get a palindrome (42262233226224).

The spelling of 11231221013013 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty-one million, thirteen thousand, thirteen".