20113233420 has 48 divisors (see below), whose sum is σ = 64362348288. Its totient is φ = 4597310400.

The previous prime is 20113233353. The next prime is 20113233431. The reversal of 20113233420 is 2433231102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23943906 + ... + 23944745.

It is an arithmetic number, because the mean of its divisors is an integer number (1340882256).

Almost surely, 2^20113233420 is an apocalyptic number.

20113233420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113233420 is an abundant number, since it is smaller than the sum of its proper divisors (44249114868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113233420 is a wasteful number, since it uses less digits than its factorization.

20113233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47888670 (or 47888668 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20113233420 its reverse (2433231102), we get a palindrome (22546464522).

It can be divided in two parts, 20113233 and 420, that added together give a triangular number (20113653 = T₆₃₄₂).

The spelling of 20113233420 in words is "twenty billion, one hundred thirteen million, two hundred thirty-three thousand, four hundred twenty".