20200122011100 has 72 divisors (see below), whose sum is σ = 58447265385600. Its totient is φ = 5386553670080.

The previous prime is 20200122011071. The next prime is 20200122011129. The reversal of 20200122011100 is 111022100202.

It is an interprime number because it is at equal distance from previous prime (20200122011071) and next prime (20200122011129).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10449019 + ... + 12230381.

It is an arithmetic number, because the mean of its divisors is an integer number (811767574800).

Almost surely, 2^{20200122011100} is an apocalyptic number.

20200122011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200122011100 is an abundant number, since it is smaller than the sum of its proper divisors (38247143374500).

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

20200122011100 is a wasteful number, since it uses less digits than its factorization.

20200122011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819179 (or 1819172 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20200122011100 its reverse (111022100202), we get a palindrome (20311144111302).

The spelling of 20200122011100 in words is "twenty trillion, two hundred billion, one hundred twenty-two million, eleven thousand, one hundred".