20002201212120 has 128 divisors (see below), whose sum is σ = 63753521515200. Its totient is φ = 5010803030016.

The previous prime is 20002201212113. The next prime is 20002201212121. The reversal of 20002201212120 is 2121210220002.

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 20002201212120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002201212121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77543659 + ... + 77801178.

Almost surely, 2^{20002201212120} is an apocalyptic number.

20002201212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002201212120 is an abundant number, since it is smaller than the sum of its proper divisors (43751320303080).

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

20002201212120 is a wasteful number, since it uses less digits than its factorization.

20002201212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155344917 (or 155344913 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20002201212120 its reverse (2121210220002), we get a palindrome (22123411432122).

The spelling of 20002201212120 in words is "twenty trillion, two billion, two hundred one million, two hundred twelve thousand, one hundred twenty".