1022200021220 has 48 divisors (see below), whose sum is σ = 2453373861120. Its totient is φ = 350455177344.

The previous prime is 1022200021211. The next prime is 1022200021247. The reversal of 1022200021220 is 221200022201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1022200021195 and 1022200021204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3963986 + ... + 4213974.

It is an arithmetic number, because the mean of its divisors is an integer number (51111955440).

Almost surely, 2^{1022200021220} is an apocalyptic number.

1022200021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022200021220 is an abundant number, since it is smaller than the sum of its proper divisors (1431173839900).

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

1022200021220 is a wasteful number, since it uses less digits than its factorization.

1022200021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279212 (or 279210 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1022200021220 its reverse (221200022201), we get a palindrome (1243400043421).

The spelling of 1022200021220 in words is "one trillion, twenty-two billion, two hundred million, twenty-one thousand, two hundred twenty".