22011111221002 has 4 divisors (see below), whose sum is σ = 33016666831506. Its totient is φ = 11005555610500.

The previous prime is 22011111220979. The next prime is 22011111221023. The reversal of 22011111221002 is 20012211111022.

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., 12096490956001 + 9914620265001 = 3478001^2 + 3148749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502777805249 + ... + 5502777805252.

Almost surely, 2^{22011111221002} is an apocalyptic number.

22011111221002 is a deficient number, since it is larger than the sum of its proper divisors (11005555610504).

22011111221002 is a wasteful number, since it uses less digits than its factorization.

22011111221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005555610503.

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

Adding to 22011111221002 its reverse (20012211111022), we get a palindrome (42023322332024).

The spelling of 22011111221002 in words is "twenty-two trillion, eleven billion, one hundred eleven million, two hundred twenty-one thousand, two".