1222010100220 has 96 divisors (see below), whose sum is σ = 3231878082048. Its totient is φ = 377751935232.

The previous prime is 1222010100217. The next prime is 1222010100221. The reversal of 1222010100220 is 220010102221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1222010100220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222010100221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7729114 + ... + 7885633.

It is an arithmetic number, because the mean of its divisors is an integer number (33665396688).

Almost surely, 2^{1222010100220} is an apocalyptic number.

1222010100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222010100220 is an abundant number, since it is smaller than the sum of its proper divisors (2009867981828).

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

1222010100220 is a wasteful number, since it uses less digits than its factorization.

1222010100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15614819 (or 15614817 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1222010100220 its reverse (220010102221), we get a palindrome (1442020202441).

The spelling of 1222010100220 in words is "one trillion, two hundred twenty-two billion, ten million, one hundred thousand, two hundred twenty".