22011121112220 has 96 divisors (see below), whose sum is σ = 69601650834240. Its totient is φ = 5773408807680.

The previous prime is 22011121112171. The next prime is 22011121112231. The reversal of 22011121112220 is 2221112111022.

22011121112220 is a `hidden beast` number, since 220 + 1 + 1 + 1 + 211 + 12 + 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 = 22011121112193 and 22011121112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334076367 + ... + 334142246.

It is an arithmetic number, because the mean of its divisors is an integer number (725017196190).

Almost surely, 2^{22011121112220} is an apocalyptic number.

22011121112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011121112220 is an abundant number, since it is smaller than the sum of its proper divisors (47590529722020).

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

22011121112220 is a wasteful number, since it uses less digits than its factorization.

22011121112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668218692 (or 668218684 counting only the distinct ones).

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

Adding to 22011121112220 its reverse (2221112111022), we get a palindrome (24232233223242).

The spelling of 22011121112220 in words is "twenty-two trillion, eleven billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty".