22021111212120 has 192 divisors, whose sum is σ = 74269463617440. Its totient is φ = 5868327398400.

The previous prime is 22021111212049. The next prime is 22021111212227. The reversal of 22021111212120 is 2121211112022.

22021111212120 is a `hidden beast` number, since 220 + 2 + 1 + 111 + 212 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22021111212093 and 22021111212102.

It is a congruent 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, 13630450 + ... + 15160190.

Almost surely, 2^{22021111212120} is an apocalyptic number.

22021111212120 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 22021111212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37134731808720).

22021111212120 is an abundant number, since it is smaller than the sum of its proper divisors (52248352405320).

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

22021111212120 is a wasteful number, since it uses less digits than its factorization.

22021111212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531248 (or 1531232 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22021111212120 its reverse (2121211112022), we get a palindrome (24142322324142).

The spelling of 22021111212120 in words is "twenty-two trillion, twenty-one billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty".