22220122012001 has 4 divisors (see below), whose sum is σ = 22221131443092. Its totient is φ = 22219112580912.

The previous prime is 22220122011979. The next prime is 22220122012003. The reversal of 22220122012001 is 10021022102222.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11291649693025 + 10928472318976 = 3360305^2 + 3305824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220122012001 is a prime.

It is a super-2 number, since 2×22220122012001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220122012003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504682526 + ... + 504726551.

It is an arithmetic number, because the mean of its divisors is an integer number (5555282860773).

Almost surely, 2^{22220122012001} is an apocalyptic number.

It is an amenable number.

22220122012001 is a deficient number, since it is larger than the sum of its proper divisors (1009431091).

22220122012001 is a wasteful number, since it uses less digits than its factorization.

22220122012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009431090.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22220122012001 its reverse (10021022102222), we get a palindrome (32241144114223).

The spelling of 22220122012001 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty-two million, twelve thousand, one".