220121201012000 has 48 divisors (see below), whose sum is σ = 540837790896312. Its totient is φ = 88048480403200.

The previous prime is 220121201011991. The next prime is 220121201012039. The reversal of 220121201012000 is 210102121022.

It can be written as a sum of positive squares in 4 ways, for example, as 68209561352464 + 151911639659536 = 8258908^2 + 12325244^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27515146127 + ... + 27515154126.

Almost surely, 2^{220121201012000} is an apocalyptic number.

220121201012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121201012000 is an abundant number, since it is smaller than the sum of its proper divisors (320716589884312).

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

220121201012000 is an equidigital number, since it uses as much as digits as its factorization.

220121201012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55030300278 (or 55030300260 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220121201012000 its reverse (210102121022), we get a palindrome (220331303133022).

The spelling of 220121201012000 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred one million, twelve thousand".