20001113123202 has 64 divisors (see below), whose sum is σ = 45842029401600. Its totient is φ = 6460579958400.

The previous prime is 20001113123161. The next prime is 20001113123221. The reversal of 20001113123202 is 20232131110002.

20001113123202 is a `hidden beast` number, since 20 + 0 + 0 + 1 + 11 + 312 + 320 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38756827 + ... + 39269502.

It is an arithmetic number, because the mean of its divisors is an integer number (716281709400).

Almost surely, 2^{20001113123202} is an apocalyptic number.

20001113123202 is an abundant number, since it is smaller than the sum of its proper divisors (25840916278398).

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

20001113123202 is a wasteful number, since it uses less digits than its factorization.

20001113123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78026488 (or 78026482 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20001113123202 its reverse (20232131110002), we get a palindrome (40233244233204).

The spelling of 20001113123202 in words is "twenty trillion, one billion, one hundred thirteen million, one hundred twenty-three thousand, two hundred two".