2013231212021 has 32 divisors (see below), whose sum is σ = 2278063408896. Its totient is φ = 1769099904000.

The previous prime is 2013231211841. The next prime is 2013231212093. The reversal of 2013231212021 is 1202121323102.

It is a cyclic number.

It is not a de Polignac number, because 2013231212021 - 2²² = 2013227017717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013231211984 and 2013231212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013231212921) 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, 2802311 + ... + 3446651.

It is an arithmetic number, because the mean of its divisors is an integer number (71189481528).

Almost surely, 2^{2013231212021} is an apocalyptic number.

It is an amenable number.

2013231212021 is a deficient number, since it is larger than the sum of its proper divisors (264832196875).

2013231212021 is a wasteful number, since it uses less digits than its factorization.

2013231212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644573.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2013231212021 its reverse (1202121323102), we get a palindrome (3215352535123).

The spelling of 2013231212021 in words is "two trillion, thirteen billion, two hundred thirty-one million, two hundred twelve thousand, twenty-one".