22001220201002 has 12 divisors (see below), whose sum is σ = 38389884228450. Its totient is φ = 9429094371816.

The previous prime is 22001220201001. The next prime is 22001220201041. The reversal of 22001220201002 is 20010202210022.

It can be written as a sum of positive squares in only one way, i.e., 21995903020441 + 5317180561 = 4689979^2 + 72919^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (22001220201001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112251123377 + ... + 112251123572.

Almost surely, 2^{22001220201002} is an apocalyptic number.

22001220201002 is a deficient number, since it is larger than the sum of its proper divisors (16388664027448).

22001220201002 is a wasteful number, since it uses less digits than its factorization.

22001220201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224502246965 (or 224502246958 counting only the distinct ones).

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

Adding to 22001220201002 its reverse (20010202210022), we get a palindrome (42011422411024).

The spelling of 22001220201002 in words is "twenty-two trillion, one billion, two hundred twenty million, two hundred one thousand, two".