20120404213 has 32 divisors (see below), whose sum is σ = 26244255744. Its totient is φ = 14969290752.

The previous prime is 20120404193. The next prime is 20120404231. The reversal of 20120404213 is 31240402102.

It is not a de Polignac number, because 20120404213 - 2⁵ = 20120404181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120404313) 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, 1877356 + ... + 1888042.

It is an arithmetic number, because the mean of its divisors is an integer number (820132992).

Almost surely, 2^20120404213 is an apocalyptic number.

It is an amenable number.

20120404213 is a deficient number, since it is larger than the sum of its proper divisors (6123851531).

20120404213 is a wasteful number, since it uses less digits than its factorization.

20120404213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11941.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20120404213 its reverse (31240402102), we get a palindrome (51360806315).

The spelling of 20120404213 in words is "twenty billion, one hundred twenty million, four hundred four thousand, two hundred thirteen".