22001210022002 has 4 divisors (see below), whose sum is σ = 33001815033006. Its totient is φ = 11000605011000.

The previous prime is 22001210021981. The next prime is 22001210022007. The reversal of 22001210022002 is 20022001210022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19067728288921 + 2933481733081 = 4366661^2 + 1712741^2 .

It is not an unprimeable number, because it can be changed into a prime (22001210022007) by changing a digit.

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 as a sum of consecutive naturals, namely, 5500302505499 + ... + 5500302505502.

Almost surely, 2^{22001210022002} is an apocalyptic number.

22001210022002 is a deficient number, since it is larger than the sum of its proper divisors (11000605011004).

22001210022002 is a wasteful number, since it uses less digits than its factorization.

22001210022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000605011003.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22001210022002 its reverse (20022001210022), we get a palindrome (42023211232024).

The spelling of 22001210022002 in words is "twenty-two trillion, one billion, two hundred ten million, twenty-two thousand, two".