22011212002 has 12 divisors (see below), whose sum is σ = 35751939570. Its totient is φ = 10159020768.

The previous prime is 22011211987. The next prime is 22011212033. The reversal of 22011212002 is 20021211022.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11545717401 + 10465494601 = 107451^2 + 102301^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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 5 ways as a sum of consecutive naturals, for example, 32560627 + ... + 32561302.

Almost surely, 2^22011212002 is an apocalyptic number.

22011212002 is a deficient number, since it is larger than the sum of its proper divisors (13740727568).

22011212002 is a wasteful number, since it uses less digits than its factorization.

22011212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65121957 (or 65121944 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22011212002 its reverse (20021211022), we get a palindrome (42032423024).

The spelling of 22011212002 in words is "twenty-two billion, eleven million, two hundred twelve thousand, two".