12210001002 has 24 divisors (see below), whose sum is σ = 26550518436. Its totient is φ = 4055305536.

The previous prime is 12210000991. The next prime is 12210001043. The reversal of 12210001002 is 20010001221.

It can be written as a sum of positive squares in 2 ways, for example, as 11305856241 + 904144761 = 106329^2 + 30069^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1219443 + ... + 1229414.

Almost surely, 2^12210001002 is an apocalyptic number.

12210001002 is an abundant number, since it is smaller than the sum of its proper divisors (14340517434).

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

12210001002 is a wasteful number, since it uses less digits than its factorization.

12210001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449142 (or 2449139 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12210001002 its reverse (20010001221), we get a palindrome (32220002223).

The spelling of 12210001002 in words is "twelve billion, two hundred ten million, one thousand, two".