22222102021020 has 144 divisors (see below), whose sum is σ = 76732127926272. Its totient is φ = 5152951182720.

The previous prime is 22222102020983. The next prime is 22222102021057. The reversal of 22222102021020 is 2012020122222.

22222102021020 is a `hidden beast` number, since 2 + 222 + 210 + 2 + 0 + 210 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (22222102020983) and next prime (22222102021057).

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 = 22222102020984 and 22222102021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 243938892 + ... + 244029971.

It is an arithmetic number, because the mean of its divisors is an integer number (532861999488).

Almost surely, 2^{22222102021020} is an apocalyptic number.

22222102021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222102021020 is an abundant number, since it is smaller than the sum of its proper divisors (54510025905252).

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

22222102021020 is a wasteful number, since it uses less digits than its factorization.

22222102021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487968912 (or 487968907 counting only the distinct ones).

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

Adding to 22222102021020 its reverse (2012020122222), we get a palindrome (24234122143242).

The spelling of 22222102021020 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred two million, twenty-one thousand, twenty".