1001222200220 has 48 divisors (see below), whose sum is σ = 2296071743616. Its totient is φ = 363705768000.

The previous prime is 1001222200213. The next prime is 1001222200271. The reversal of 1001222200220 is 220022221001.

It is a junction number, because it is equal to n+sod(n) for n = 1001222200195 and 1001222200204.

It is a congruent number.

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, 2129846 + ... + 2557085.

It is an arithmetic number, because the mean of its divisors is an integer number (47834827992).

Almost surely, 2^{1001222200220} is an apocalyptic number.

1001222200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001222200220 is an abundant number, since it is smaller than the sum of its proper divisors (1294849543396).

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

1001222200220 is a wasteful number, since it uses less digits than its factorization.

1001222200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687922 (or 4687920 counting only the distinct ones).

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

Adding to 1001222200220 its reverse (220022221001), we get a palindrome (1221244421221).

The spelling of 1001222200220 in words is "one trillion, one billion, two hundred twenty-two million, two hundred thousand, two hundred twenty".