20122111100120 has 32 divisors (see below), whose sum is σ = 45275054598000. Its totient is φ = 8048790284928.

The previous prime is 20122111100101. The next prime is 20122111100123. The reversal of 20122111100120 is 2100111122102.

It is a junction number, because it is equal to n+sod(n) for n = 20122111100095 and 20122111100104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122111100123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4617431 + ... + 7846329.

Almost surely, 2^{20122111100120} is an apocalyptic number.

20122111100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122111100120 is an abundant number, since it is smaller than the sum of its proper divisors (25152943497880).

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

20122111100120 is a wasteful number, since it uses less digits than its factorization.

20122111100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384707 (or 3384703 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20122111100120 its reverse (2100111122102), we get a palindrome (22222222222222).

The spelling of 20122111100120 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, one hundred thousand, one hundred twenty".