1212220002 has 32 divisors (see below), whose sum is σ = 2773555200. Its totient is φ = 346002768.

The previous prime is 1212219989. The next prime is 1212220033. The reversal of 1212220002 is 2000222121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212220002.

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, 29749 + ... + 57527.

It is an arithmetic number, because the mean of its divisors is an integer number (86673600).

Almost surely, 2^1212220002 is an apocalyptic number.

1212220002 is an abundant number, since it is smaller than the sum of its proper divisors (1561335198).

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

1212220002 is a wasteful number, since it uses less digits than its factorization.

1212220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1212220002 is about 34816.9499238517. The cubic root of 1212220002 is about 1066.2535298283.

Adding to 1212220002 its reverse (2000222121), we get a palindrome (3212442123).

The spelling of 1212220002 in words is "one billion, two hundred twelve million, two hundred twenty thousand, two".