20011233120 has 96 divisors (see below), whose sum is σ = 66743375328. Its totient is φ = 5022425088.

The previous prime is 20011233097. The next prime is 20011233131. The reversal of 20011233120 is 2133211002.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a self number, because there is not a number n which added to its sum of digits gives 20011233120.

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, 1218019 + ... + 1234338.

It is an arithmetic number, because the mean of its divisors is an integer number (695243493).

Almost surely, 2^20011233120 is an apocalyptic number.

20011233120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011233120 is an abundant number, since it is smaller than the sum of its proper divisors (46732142208).

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

20011233120 is a wasteful number, since it uses less digits than its factorization.

20011233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452392 (or 2452384 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20011233120 its reverse (2133211002), we get a palindrome (22144444122).

The spelling of 20011233120 in words is "twenty billion, eleven million, two hundred thirty-three thousand, one hundred twenty".