22221212202001 has 8 divisors (see below), whose sum is σ = 22358165382080. Its totient is φ = 22084266665232.

The previous prime is 22221212201977. The next prime is 22221212202017. The reversal of 22221212202001 is 10020221212222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221212202001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221212202001.

It is not an unprimeable number, because it can be changed into a prime (22221212202031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3977380 + ... + 7762858.

It is an arithmetic number, because the mean of its divisors is an integer number (2794770672760).

Almost surely, 2^{22221212202001} is an apocalyptic number.

It is an amenable number.

22221212202001 is a deficient number, since it is larger than the sum of its proper divisors (136953180079).

22221212202001 is a wasteful number, since it uses less digits than its factorization.

22221212202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821655.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22221212202001 its reverse (10020221212222), we get a palindrome (32241433414223).

The spelling of 22221212202001 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred two thousand, one".