20122111420 has 24 divisors (see below), whose sum is σ = 42851598048. Its totient is φ = 7935480000.

The previous prime is 20122111379. The next prime is 20122111511. The reversal of 20122111420 is 2411122102.

It is a junction number, because it is equal to n+sod(n) for n = 20122111394 and 20122111403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7083831 + ... + 7086670.

It is an arithmetic number, because the mean of its divisors is an integer number (1785483252).

Almost surely, 2^20122111420 is an apocalyptic number.

20122111420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122111420 is an abundant number, since it is smaller than the sum of its proper divisors (22729486628).

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

20122111420 is a wasteful number, since it uses less digits than its factorization.

20122111420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14170581 (or 14170579 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20122111420 its reverse (2411122102), we get a palindrome (22533233522).

The spelling of 20122111420 in words is "twenty billion, one hundred twenty-two million, one hundred eleven thousand, four hundred twenty".