20123001213 has 32 divisors (see below), whose sum is σ = 32287088640. Its totient is φ = 10890417600.

The previous prime is 20123001211. The next prime is 20123001221. The reversal of 20123001213 is 31210032102.

It is not a de Polignac number, because 20123001213 - 2¹ = 20123001211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20123001192 and 20123001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123001211) 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, 2030356 + ... + 2040242.

It is an arithmetic number, because the mean of its divisors is an integer number (1008971520).

Almost surely, 2^20123001213 is an apocalyptic number.

It is an amenable number.

20123001213 is a deficient number, since it is larger than the sum of its proper divisors (12164087427).

20123001213 is a wasteful number, since it uses less digits than its factorization.

20123001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15017.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20123001213 its reverse (31210032102), we get a palindrome (51333033315).

The spelling of 20123001213 in words is "twenty billion, one hundred twenty-three million, one thousand, two hundred thirteen".