121320013231011 has 32 divisors (see below), whose sum is σ = 192914012371968. Its totient is φ = 66308928301440.

The previous prime is 121320013231003. The next prime is 121320013231127. The reversal of 121320013231011 is 110132310023121.

121320013231011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 121320013231011 - 2³ = 121320013231003 is a prime.

It is a super-2 number, since 2×121320013231011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121320013431011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7229365 + ... + 17172761.

It is an arithmetic number, because the mean of its divisors is an integer number (6028562886624).

Almost surely, 2^{121320013231011} is an apocalyptic number.

121320013231011 is a deficient number, since it is larger than the sum of its proper divisors (71593999140957).

121320013231011 is a wasteful number, since it uses less digits than its factorization.

121320013231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968691.

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

Adding to 121320013231011 its reverse (110132310023121), we get a palindrome (231452323254132).

The spelling of 121320013231011 in words is "one hundred twenty-one trillion, three hundred twenty billion, thirteen million, two hundred thirty-one thousand, eleven".