20012211120 has 80 divisors (see below), whose sum is σ = 67677668352. Its totient is φ = 4851444480.

The previous prime is 20012211097. The next prime is 20012211143. The reversal of 20012211120 is 2111221002.

It is an interprime number because it is at equal distance from previous prime (20012211097) and next prime (20012211143).

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

It is a super-2 number, since 2×20012211120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20012211096 and 20012211105.

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, 3787552 + ... + 3792831.

Almost surely, 2^20012211120 is an apocalyptic number.

20012211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012211120 is an abundant number, since it is smaller than the sum of its proper divisors (47665457232).

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

20012211120 is a wasteful number, since it uses less digits than its factorization.

20012211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580410 (or 7580404 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012211120 its reverse (2111221002), we get a palindrome (22123432122).

It can be divided in two parts, 20012 and 211120, that added together give a palindrome (231132).

The spelling of 20012211120 in words is "twenty billion, twelve million, two hundred eleven thousand, one hundred twenty".