21011022110122 has 16 divisors (see below), whose sum is σ = 36404123870592. Its totient is φ = 8988672560320.

The previous prime is 21011022110101. The next prime is 21011022110123. The reversal of 21011022110122 is 22101122011012.

It is a super-2 number, since 2×21011022110122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21011022110096 and 21011022110105.

It is not an unprimeable number, because it can be changed into a prime (21011022110123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28089601378 + ... + 28089602125.

It is an arithmetic number, because the mean of its divisors is an integer number (2275257741912).

Almost surely, 2^{21011022110122} is an apocalyptic number.

21011022110122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011022110122 is a deficient number, since it is larger than the sum of its proper divisors (15393101760470).

21011022110122 is a wasteful number, since it uses less digits than its factorization.

21011022110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56179203533.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21011022110122 its reverse (22101122011012), we get a palindrome (43112144121134).

The spelling of 21011022110122 in words is "twenty-one trillion, eleven billion, twenty-two million, one hundred ten thousand, one hundred twenty-two".