20000122010100 has 216 divisors, whose sum is σ = 66883575927168. Its totient is φ = 4981320115200.

The previous prime is 20000122010041. The next prime is 20000122010149. The reversal of 20000122010100 is 101022100002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2985004 + ... + 6993603.

It is an arithmetic number, because the mean of its divisors is an integer number (309646184848).

Almost surely, 2^{20000122010100} is an apocalyptic number.

20000122010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000122010100 is an abundant number, since it is smaller than the sum of its proper divisors (46883453917068).

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

20000122010100 is a wasteful number, since it uses less digits than its factorization.

20000122010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978775 (or 9978765 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20000122010100 its reverse (101022100002), we get a palindrome (20101144110102).

The spelling of 20000122010100 in words is "twenty trillion, one hundred twenty-two million, ten thousand, one hundred".