22012202002001 has 4 divisors (see below), whose sum is σ = 22152407110452. Its totient is φ = 21871996893552.

The previous prime is 22012202001997. The next prime is 22012202002067. The reversal of 22012202002001 is 10020020221022.

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 10968178206976 + 11044023795025 = 3311824^2 + 3323255^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012202002001 - 2² = 22012202001997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012202002201) 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, 70102553990 + ... + 70102554303.

It is an arithmetic number, because the mean of its divisors is an integer number (5538101777613).

Almost surely, 2^{22012202002001} is an apocalyptic number.

It is an amenable number.

22012202002001 is a deficient number, since it is larger than the sum of its proper divisors (140205108451).

22012202002001 is a wasteful number, since it uses less digits than its factorization.

22012202002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140205108450.

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

Adding to 22012202002001 its reverse (10020020221022), we get a palindrome (32032222223023).

The spelling of 22012202002001 in words is "twenty-two trillion, twelve billion, two hundred two million, two thousand, one".