22001211101 has 4 divisors (see below), whose sum is σ = 23159169600. Its totient is φ = 20843252604.

The previous prime is 22001211047. The next prime is 22001211103. The reversal of 22001211101 is 10111210022.

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 an emirpimes, since its reverse is a distinct semiprime: 10111210022 = 2 ⋅5055605011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001211101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001211103) 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, 578979221 + ... + 578979258.

It is an arithmetic number, because the mean of its divisors is an integer number (5789792400).

Almost surely, 2^22001211101 is an apocalyptic number.

It is an amenable number.

22001211101 is a deficient number, since it is larger than the sum of its proper divisors (1157958499).

22001211101 is a wasteful number, since it uses less digits than its factorization.

22001211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157958498.

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

Adding to 22001211101 its reverse (10111210022), we get a palindrome (32112421123).

The spelling of 22001211101 in words is "twenty-two billion, one million, two hundred eleven thousand, one hundred one".