20213143204 has 12 divisors (see below), whose sum is σ = 35388088624. Its totient is φ = 10102260744.

The previous prime is 20213143177. The next prime is 20213143207. The reversal of 20213143204 is 40234131202.

It is a super-2 number, since 2×20213143204² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20213143207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067154 + ... + 1085929.

Almost surely, 2^20213143204 is an apocalyptic number.

It is an amenable number.

20213143204 is a deficient number, since it is larger than the sum of its proper divisors (15174945420).

20213143204 is a wasteful number, since it uses less digits than its factorization.

20213143204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155434 (or 2155432 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20213143204 its reverse (40234131202), we get a palindrome (60447274406).

The spelling of 20213143204 in words is "twenty billion, two hundred thirteen million, one hundred forty-three thousand, two hundred four".