1002122212220 has 12 divisors (see below), whose sum is σ = 2104456645704. Its totient is φ = 400848884880.

The previous prime is 1002122212211. The next prime is 1002122212321. The reversal of 1002122212220 is 222122212001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25053055286 + ... + 25053055325.

It is an arithmetic number, because the mean of its divisors is an integer number (175371387142).

Almost surely, 2^{1002122212220} is an apocalyptic number.

1002122212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002122212220 is an abundant number, since it is smaller than the sum of its proper divisors (1102334433484).

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

1002122212220 is a wasteful number, since it uses less digits than its factorization.

1002122212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50106110620 (or 50106110618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1002122212220 its reverse (222122212001), we get a palindrome (1224244424221).

The spelling of 1002122212220 in words is "one trillion, two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty".