21222022211120 has 40 divisors (see below), whose sum is σ = 49455153688416. Its totient is φ = 8469204231168.

The previous prime is 21222022211111. The next prime is 21222022211141. The reversal of 21222022211120 is 2111222022212.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×21222022211120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21222022211092 and 21222022211101.

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, 306287852 + ... + 306357131.

Almost surely, 2^{21222022211120} is an apocalyptic number.

21222022211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222022211120 is an abundant number, since it is smaller than the sum of its proper divisors (28233131477296).

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

21222022211120 is a wasteful number, since it uses less digits than its factorization.

21222022211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612645429 (or 612645423 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222022211120 its reverse (2111222022212), we get a palindrome (23333244233332).

The spelling of 21222022211120 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-two million, two hundred eleven thousand, one hundred twenty".