20000122001220 has 48 divisors (see below), whose sum is σ = 56001062396160. Its totient is φ = 5333297220096.

The previous prime is 20000122001207. The next prime is 20000122001269. The reversal of 20000122001220 is 2210022100002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20000122001196 and 20000122001205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2643541 + ... + 6854819.

It is an arithmetic number, because the mean of its divisors is an integer number (1166688799920).

Almost surely, 2^{20000122001220} is an apocalyptic number.

20000122001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000122001220 is an abundant number, since it is smaller than the sum of its proper divisors (36000940394940).

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

20000122001220 is a wasteful number, since it uses less digits than its factorization.

20000122001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290444 (or 4290442 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20000122001220 its reverse (2210022100002), we get a palindrome (22210144101222).

The spelling of 20000122001220 in words is "twenty trillion, one hundred twenty-two million, one thousand, two hundred twenty".