20220220021200 has 120 divisors (see below), whose sum is σ = 64885941974400. Its totient is φ = 5382582113280.

The previous prime is 20220220021097. The next prime is 20220220021237. The reversal of 20220220021200 is 212002202202.

It is a tau number, because it is divible by the number of its divisors (120).

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 20220220021200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14124040 + ... + 15489639.

It is an arithmetic number, because the mean of its divisors is an integer number (540716183120).

Almost surely, 2^{20220220021200} is an apocalyptic number.

20220220021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220220021200 is an abundant number, since it is smaller than the sum of its proper divisors (44665721953200).

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

20220220021200 is a wasteful number, since it uses less digits than its factorization.

20220220021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29614269 (or 29614258 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20220220021200 its reverse (212002202202), we get a palindrome (20432222223402).

The spelling of 20220220021200 in words is "twenty trillion, two hundred twenty billion, two hundred twenty million, twenty-one thousand, two hundred".