20312211120 has 40 divisors (see below), whose sum is σ = 62967855216. Its totient is φ = 5416589568.

The previous prime is 20312211119. The next prime is 20312211121. The reversal of 20312211120 is 2111221302.

It is an interprime number because it is at equal distance from previous prime (20312211119) and next prime (20312211121).

It is a tau number, because it is divible by the number of its divisors (40).

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 20312211120.

It is not an unprimeable number, because it can be changed into a prime (20312211121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42316867 + ... + 42317346.

Almost surely, 2^20312211120 is an apocalyptic number.

20312211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312211120 is an abundant number, since it is smaller than the sum of its proper divisors (42655644096).

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

20312211120 is a wasteful number, since it uses less digits than its factorization.

20312211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84634229 (or 84634223 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20312211120 its reverse (2111221302), we get a palindrome (22423432422).

The spelling of 20312211120 in words is "twenty billion, three hundred twelve million, two hundred eleven thousand, one hundred twenty".