21211000110022 has 4 divisors (see below), whose sum is σ = 31816500165036. Its totient is φ = 10605500055010.

The previous prime is 21211000109993. The next prime is 21211000110043. The reversal of 21211000110022 is 22001100011212.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21211000110022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21211000109984 and 21211000110011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5302750027504 + ... + 5302750027507.

It is an arithmetic number, because the mean of its divisors is an integer number (7954125041259).

Almost surely, 2^{21211000110022} is an apocalyptic number.

21211000110022 is a deficient number, since it is larger than the sum of its proper divisors (10605500055014).

21211000110022 is a wasteful number, since it uses less digits than its factorization.

21211000110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605500055013.

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

Adding to 21211000110022 its reverse (22001100011212), we get a palindrome (43212100121234).

The spelling of 21211000110022 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten thousand, twenty-two".