1022111112220 has 24 divisors (see below), whose sum is σ = 2341563639408. Its totient is φ = 371676768000.

The previous prime is 1022111112193. The next prime is 1022111112221. The reversal of 1022111112220 is 222111112201.

It is a super-2 number, since 2×1022111112220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022111112194 and 1022111112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022111112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2322979581 + ... + 2322980020.

It is an arithmetic number, because the mean of its divisors is an integer number (97565151642).

Almost surely, 2^{1022111112220} is an apocalyptic number.

1022111112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022111112220 is an abundant number, since it is smaller than the sum of its proper divisors (1319452527188).

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

1022111112220 is a wasteful number, since it uses less digits than its factorization.

1022111112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645959621 (or 4645959619 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1022111112220 its reverse (222111112201), we get a palindrome (1244222224421).

The spelling of 1022111112220 in words is "one trillion, twenty-two billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty".