22211101121220 has 96 divisors (see below), whose sum is σ = 75383131098240. Its totient is φ = 5384509361280.

The previous prime is 22211101121219. The next prime is 22211101121263. The reversal of 22211101121220 is 2212110111222.

22211101121220 is a `hidden beast` number, since 2 + 221 + 1 + 101 + 121 + 220 = 666.

It is a super-2 number, since 2×22211101121220² (a number of 27 digits) contains 22 as substring.

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 = 22211101121193 and 22211101121202.

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, 1869615367 + ... + 1869627246.

It is an arithmetic number, because the mean of its divisors is an integer number (785240948940).

Almost surely, 2^{22211101121220} is an apocalyptic number.

22211101121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211101121220 is an abundant number, since it is smaller than the sum of its proper divisors (53172029977020).

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

22211101121220 is a wasteful number, since it uses less digits than its factorization.

22211101121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739242642 (or 3739242634 counting only the distinct ones).

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

Adding to 22211101121220 its reverse (2212110111222), we get a palindrome (24423211232442).

The spelling of 22211101121220 in words is "twenty-two trillion, two hundred eleven billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty".