20120100020220 has 48 divisors (see below), whose sum is σ = 56853126681120. Its totient is φ = 5316136517376.

The previous prime is 20120100020201. The next prime is 20120100020299. The reversal of 20120100020220 is 2202000102102.

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 = 20120100020196 and 20120100020205.

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, 1538227407 + ... + 1538240486.

It is an arithmetic number, because the mean of its divisors is an integer number (1184440139190).

Almost surely, 2^{20120100020220} is an apocalyptic number.

20120100020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120100020220 is an abundant number, since it is smaller than the sum of its proper divisors (36733026660900).

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

20120100020220 is a wasteful number, since it uses less digits than its factorization.

20120100020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076468014 (or 3076468012 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20120100020220 its reverse (2202000102102), we get a palindrome (22322100122322).

The spelling of 20120100020220 in words is "twenty trillion, one hundred twenty billion, one hundred million, twenty thousand, two hundred twenty".