12221121011002 has 16 divisors (see below), whose sum is σ = 18637463391624. Its totient is φ = 6008689800000.

The previous prime is 12221121010999. The next prime is 12221121011041. The reversal of 12221121011002 is 20011012112221.

It can be written as a sum of positive squares in 4 ways, for example, as 7774678232721 + 4446442778281 = 2788311^2 + 2108659^2 .

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, 13712749 + ... + 14576752.

Almost surely, 2^{12221121011002} is an apocalyptic number.

12221121011002 is a deficient number, since it is larger than the sum of its proper divisors (6416342380622).

12221121011002 is a wasteful number, since it uses less digits than its factorization.

12221121011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28293105.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221121011002 its reverse (20011012112221), we get a palindrome (32232133123223).

The spelling of 12221121011002 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, eleven thousand, two".