22101011222220 has 288 divisors, whose sum is σ = 82654352097408. Its totient is φ = 4664795406336.

The previous prime is 22101011222209. The next prime is 22101011222263. The reversal of 22101011222220 is 2222211010122.

It is a happy number.

22101011222220 is a `hidden beast` number, since 2 + 210 + 1 + 0 + 11 + 222 + 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 = 22101011222193 and 22101011222202.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8598639 + ... + 10869158.

It is an arithmetic number, because the mean of its divisors is an integer number (286994278116).

Almost surely, 2^{22101011222220} is an apocalyptic number.

22101011222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101011222220 is an abundant number, since it is smaller than the sum of its proper divisors (60553340875188).

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

22101011222220 is a wasteful number, since it uses less digits than its factorization.

22101011222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467889 (or 19467884 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22101011222220 its reverse (2222211010122), we get a palindrome (24323222232342).

The spelling of 22101011222220 in words is "twenty-two trillion, one hundred one billion, eleven million, two hundred twenty-two thousand, two hundred twenty".