22221210021011 has 4 divisors (see below), whose sum is σ = 22221219545952. Its totient is φ = 22221200496072.

The previous prime is 22221210020987. The next prime is 22221210021037. The reversal of 22221210021011 is 11012001212222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221210021011 is a prime.

It is a super-2 number, since 2×22221210021011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221210021041) 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, 1363985 + ... + 6804621.

It is an arithmetic number, because the mean of its divisors is an integer number (5555304886488).

Almost surely, 2^{22221210021011} is an apocalyptic number.

22221210021011 is a deficient number, since it is larger than the sum of its proper divisors (9524941).

22221210021011 is an equidigital number, since it uses as much as digits as its factorization.

22221210021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524940.

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

Adding to 22221210021011 its reverse (11012001212222), we get a palindrome (33233211233233).

The spelling of 22221210021011 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred ten million, twenty-one thousand, eleven".