22111201001 has 4 divisors (see below), whose sum is σ = 22111499904. Its totient is φ = 22110902100.

The previous prime is 22111200989. The next prime is 22111201009. The reversal of 22111201001 is 10010211122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10010211122 = 2 ⋅5005105561.

It is a cyclic number.

It is not a de Polignac number, because 22111201001 - 2¹⁴ = 22111184617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111201009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52256 + ... + 216686.

It is an arithmetic number, because the mean of its divisors is an integer number (5527874976).

Almost surely, 2^22111201001 is an apocalyptic number.

It is an amenable number.

22111201001 is a deficient number, since it is larger than the sum of its proper divisors (298903).

22111201001 is a wasteful number, since it uses less digits than its factorization.

22111201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298902.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111201001 its reverse (10010211122), we get a palindrome (32121412123).

The spelling of 22111201001 in words is "twenty-two billion, one hundred eleven million, two hundred one thousand, one".