22001222002 has 4 divisors (see below), whose sum is σ = 33001833006. Its totient is φ = 11000611000.

The previous prime is 22001221997. The next prime is 22001222003. The reversal of 22001222002 is 20022210022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20022210022 = 2 ⋅10011105011.

It can be written as a sum of positive squares in only one way, i.e., 21544074841 + 457147161 = 146779^2 + 21381^2 .

It is a super-3 number, since 3×22001222002³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22001222003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500305499 + ... + 5500305502.

Almost surely, 2^22001222002 is an apocalyptic number.

22001222002 is a deficient number, since it is larger than the sum of its proper divisors (11000611004).

22001222002 is a wasteful number, since it uses less digits than its factorization.

22001222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000611003.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22001222002 its reverse (20022210022), we get a palindrome (42023432024).

The spelling of 22001222002 in words is "twenty-two billion, one million, two hundred twenty-two thousand, two".