22012221002220 has 72 divisors (see below), whose sum is σ = 66772687568496. Its totient is φ = 5869724821632.

The previous prime is 22012221002207. The next prime is 22012221002249. The reversal of 22012221002220 is 2220012221022.

22012221002220 is a `hidden beast` number, since 220 + 1 + 2 + 221 + 0 + 0 + 2 + 220 = 666.

It is a super-2 number, since 2×22012221002220² (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 = 22012221002193 and 22012221002202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3223014 + ... + 7376466.

Almost surely, 2^{22012221002220} is an apocalyptic number.

22012221002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012221002220 is an abundant number, since it is smaller than the sum of its proper divisors (44760466566276).

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

22012221002220 is a wasteful number, since it uses less digits than its factorization.

22012221002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182911 (or 4182906 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22012221002220 its reverse (2220012221022), we get a palindrome (24232233223242).

The spelling of 22012221002220 in words is "twenty-two trillion, twelve billion, two hundred twenty-one million, two thousand, two hundred twenty".