20011031121030 has 32 divisors (see below), whose sum is σ = 48140551857888. Its totient is φ = 5323599724800.

The previous prime is 20011031121007. The next prime is 20011031121041. The reversal of 20011031121030 is 3012113011002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 792189711 + ... + 792214970.

It is an arithmetic number, because the mean of its divisors is an integer number (1504392245559).

Almost surely, 2^{20011031121030} is an apocalyptic number.

20011031121030 is an abundant number, since it is smaller than the sum of its proper divisors (28129520736858).

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

20011031121030 is a wasteful number, since it uses less digits than its factorization.

20011031121030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584405112.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20011031121030 its reverse (3012113011002), we get a palindrome (23023144132032).

The spelling of 20011031121030 in words is "twenty trillion, eleven billion, thirty-one million, one hundred twenty-one thousand, thirty".