20200122012100 has 144 divisors (see below), whose sum is σ = 48333932430336. Its totient is φ = 7294307328000.

The previous prime is 20200122012071. The next prime is 20200122012173. The reversal of 20200122012100 is 121022100202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4259065 + ... + 7651135.

It is an arithmetic number, because the mean of its divisors is an integer number (335652308544).

Almost surely, 2^{20200122012100} is an apocalyptic number.

20200122012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200122012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24166966215168).

20200122012100 is an abundant number, since it is smaller than the sum of its proper divisors (28133810418236).

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

20200122012100 is a wasteful number, since it uses less digits than its factorization.

20200122012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392246 (or 3392239 counting only the distinct ones).

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

Adding to 20200122012100 its reverse (121022100202), we get a palindrome (20321144112302).

The spelling of 20200122012100 in words is "twenty trillion, two hundred billion, one hundred twenty-two million, twelve thousand, one hundred".