20110321021200 has 120 divisors (see below), whose sum is σ = 64422961973088. Its totient is φ = 5362510832640.

The previous prime is 20110321021187. The next prime is 20110321021229. The reversal of 20110321021200 is 212012301102.

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

It is a super-2 number, since 2×20110321021200² (a number of 27 digits) contains 22 as substring.

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 20110321021200.

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, 27122604 + ... + 27854196.

Almost surely, 2^{20110321021200} is an apocalyptic number.

20110321021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110321021200 is an abundant number, since it is smaller than the sum of its proper divisors (44312640951888).

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

20110321021200 is a wasteful number, since it uses less digits than its factorization.

20110321021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754521 (or 754510 counting only the distinct ones).

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

Adding to 20110321021200 its reverse (212012301102), we get a palindrome (20322333322302).

The spelling of 20110321021200 in words is "twenty trillion, one hundred ten billion, three hundred twenty-one million, twenty-one thousand, two hundred".