1002212212220 has 24 divisors (see below), whose sum is σ = 2105468844864. Its totient is φ = 400728085056.

The previous prime is 1002212212213. The next prime is 1002212212271. The reversal of 1002212212220 is 222122122001.

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 7 ways as a sum of consecutive naturals, for example, 9747572 + ... + 9849851.

It is an arithmetic number, because the mean of its divisors is an integer number (87727868536).

Almost surely, 2^{1002212212220} is an apocalyptic number.

1002212212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002212212220 is an abundant number, since it is smaller than the sum of its proper divisors (1103256632644).

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

1002212212220 is a wasteful number, since it uses less digits than its factorization.

1002212212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19599989 (or 19599987 counting only the distinct ones).

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

Adding to 1002212212220 its reverse (222122122001), we get a palindrome (1224334334221).

The spelling of 1002212212220 in words is "one trillion, two billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty".