1012220100220 has 24 divisors (see below), whose sum is σ = 2429328240864. Its totient is φ = 347046891456.

The previous prime is 1012220100211. The next prime is 1012220100389. The reversal of 1012220100220 is 220010222101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012220100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615071647 + ... + 3615071926.

It is an arithmetic number, because the mean of its divisors is an integer number (101222010036).

Almost surely, 2^{1012220100220} is an apocalyptic number.

1012220100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012220100220 is an abundant number, since it is smaller than the sum of its proper divisors (1417108140644).

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

1012220100220 is a wasteful number, since it uses less digits than its factorization.

1012220100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230143589 (or 7230143587 counting only the distinct ones).

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

Adding to 1012220100220 its reverse (220010222101), we get a palindrome (1232230322321).

The spelling of 1012220100220 in words is "one trillion, twelve billion, two hundred twenty million, one hundred thousand, two hundred twenty".