22001221110001 has 24 divisors (see below), whose sum is σ = 25783373232960. Its totient is φ = 18718167115872.

The previous prime is 22001221109993. The next prime is 22001221110059. The reversal of 22001221110001 is 10001112210022.

It is not a de Polignac number, because 22001221110001 - 2³ = 22001221109993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22001221110061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29097931 + ... + 29844463.

It is an arithmetic number, because the mean of its divisors is an integer number (1074307218040).

Almost surely, 2^{22001221110001} is an apocalyptic number.

It is an amenable number.

22001221110001 is a deficient number, since it is larger than the sum of its proper divisors (3782152122959).

22001221110001 is a wasteful number, since it uses less digits than its factorization.

22001221110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751013 (or 751006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22001221110001 its reverse (10001112210022), we get a palindrome (32002333320023).

The spelling of 22001221110001 in words is "twenty-two trillion, one billion, two hundred twenty-one million, one hundred ten thousand, one".