20213112420404 has 24 divisors (see below), whose sum is σ = 35390679590280. Its totient is φ = 10101490269696.

The previous prime is 20213112420383. The next prime is 20213112420407. The reversal of 20213112420404 is 40402421131202.

It can be written as a sum of positive squares in 4 ways, for example, as 1223545699600 + 18989566720804 = 1106140^2 + 4357702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213112420407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158052374 + ... + 158180210.

It is an arithmetic number, because the mean of its divisors is an integer number (1474611649595).

Almost surely, 2^{20213112420404} is an apocalyptic number.

It is an amenable number.

20213112420404 is a deficient number, since it is larger than the sum of its proper divisors (15177567169876).

20213112420404 is a wasteful number, since it uses less digits than its factorization.

20213112420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147347 (or 147345 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20213112420404 its reverse (40402421131202), we get a palindrome (60615533551606).

The spelling of 20213112420404 in words is "twenty trillion, two hundred thirteen billion, one hundred twelve million, four hundred twenty thousand, four hundred four".