220121201200 has 30 divisors (see below), whose sum is σ = 528841186844. Its totient is φ = 88048480320.

The previous prime is 220121201197. The next prime is 220121201213. The reversal of 220121201200 is 2102121022.

It is a happy number.

It is a super-3 number, since 3×220121201200³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275151102 + ... + 275151901.

Almost surely, 2^220121201200 is an apocalyptic number.

220121201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121201200 is an abundant number, since it is smaller than the sum of its proper divisors (308719985644).

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

220121201200 is a wasteful number, since it uses less digits than its factorization.

220121201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550303021 (or 550303010 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220121201200 its reverse (2102121022), we get a palindrome (222223322222).

The spelling of 220121201200 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred".