22111011221001 has 4 divisors (see below), whose sum is σ = 29481348294672. Its totient is φ = 14740674147332.

The previous prime is 22111011220927. The next prime is 22111011221041. The reversal of 22111011221001 is 10012211011122.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 22111011221001 - 2¹¹ = 22111011218953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22111011221041) 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, 3685168536831 + ... + 3685168536836.

It is an arithmetic number, because the mean of its divisors is an integer number (7370337073668).

Almost surely, 2^{22111011221001} is an apocalyptic number.

It is an amenable number.

22111011221001 is a deficient number, since it is larger than the sum of its proper divisors (7370337073671).

22111011221001 is an equidigital number, since it uses as much as digits as its factorization.

22111011221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370337073670.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22111011221001 its reverse (10012211011122), we get a palindrome (32123222232123).

The spelling of 22111011221001 in words is "twenty-two trillion, one hundred eleven billion, eleven million, two hundred twenty-one thousand, one".