21011012110022 has 12 divisors (see below), whose sum is σ = 34642123272708. Its totient is φ = 9550460049900.

The previous prime is 21011012109947. The next prime is 21011012110051. The reversal of 21011012110022 is 22001121011012.

It is a super-2 number, since 2×21011012110022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21011012109979 and 21011012110006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43411181804 + ... + 43411182287.

It is an arithmetic number, because the mean of its divisors is an integer number (2886843606059).

Almost surely, 2^{21011012110022} is an apocalyptic number.

21011012110022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011012110022 is a deficient number, since it is larger than the sum of its proper divisors (13631111162686).

21011012110022 is a wasteful number, since it uses less digits than its factorization.

21011012110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86822364115 (or 86822364104 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21011012110022 its reverse (22001121011012), we get a palindrome (43012133121034).

The spelling of 21011012110022 in words is "twenty-one trillion, eleven billion, twelve million, one hundred ten thousand, twenty-two".