22111211120220 has 144 divisors (see below), whose sum is σ = 71272385690688. Its totient is φ = 5529446000640.

The previous prime is 22111211120147. The next prime is 22111211120227. The reversal of 22111211120220 is 2202111211122.

22111211120220 is a `hidden beast` number, since 2 + 2 + 111 + 211 + 120 + 220 = 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 = 22111211120193 and 22111211120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111211120227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12195496 + ... + 13890735.

It is an arithmetic number, because the mean of its divisors is an integer number (494947122852).

Almost surely, 2^{22111211120220} is an apocalyptic number.

22111211120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111211120220 is an abundant number, since it is smaller than the sum of its proper divisors (49161174570468).

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

22111211120220 is a wasteful number, since it uses less digits than its factorization.

22111211120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26086540 (or 26086535 counting only the distinct ones).

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

Adding to 22111211120220 its reverse (2202111211122), we get a palindrome (24313322331342).

The spelling of 22111211120220 in words is "twenty-two trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty".