22122221001101 has 4 divisors (see below), whose sum is σ = 23823930308892. Its totient is φ = 20420511693312.

The previous prime is 22122221001061. The next prime is 22122221001103. The reversal of 22122221001101 is 10110012222122.

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 12419457015625 + 9702763985476 = 3524125^2 + 3114926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122221001101 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 22122221001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122221001103) 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, 850854653876 + ... + 850854653901.

It is an arithmetic number, because the mean of its divisors is an integer number (5955982577223).

Almost surely, 2^{22122221001101} is an apocalyptic number.

It is an amenable number.

22122221001101 is a deficient number, since it is larger than the sum of its proper divisors (1701709307791).

22122221001101 is a wasteful number, since it uses less digits than its factorization.

22122221001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701709307790.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22122221001101 its reverse (10110012222122), we get a palindrome (32232233223223).

The spelling of 22122221001101 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, one thousand, one hundred one".