20023211231120 has 80 divisors (see below), whose sum is σ = 47376074403840. Its totient is φ = 7869071089152.

The previous prime is 20023211231113. The next prime is 20023211231123. The reversal of 20023211231120 is 2113211232002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20023211231092 and 20023211231101.

It is not an unprimeable number, because it can be changed into a prime (20023211231123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8520455 + ... + 10613414.

It is an arithmetic number, because the mean of its divisors is an integer number (592200930048).

Almost surely, 2^{20023211231120} is an apocalyptic number.

20023211231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023211231120 is an abundant number, since it is smaller than the sum of its proper divisors (27352863172720).

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

20023211231120 is a wasteful number, since it uses less digits than its factorization.

20023211231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19134112 (or 19134106 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20023211231120 its reverse (2113211232002), we get a palindrome (22136422463122).

The spelling of 20023211231120 in words is "twenty trillion, twenty-three billion, two hundred eleven million, two hundred thirty-one thousand, one hundred twenty".