21211110200122 has 16 divisors (see below), whose sum is σ = 33201424472832. Its totient is φ = 10144008317520.

The previous prime is 21211110200047. The next prime is 21211110200131. The reversal of 21211110200122 is 22100201111212.

It is a super-2 number, since 2×21211110200122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21211110200096 and 21211110200105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8818113 + ... + 10962724.

It is an arithmetic number, because the mean of its divisors is an integer number (2075089029552).

Almost surely, 2^{21211110200122} is an apocalyptic number.

21211110200122 is a deficient number, since it is larger than the sum of its proper divisors (11990314272710).

21211110200122 is a wasteful number, since it uses less digits than its factorization.

21211110200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19804173.

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

Adding to 21211110200122 its reverse (22100201111212), we get a palindrome (43311311311334).

The spelling of 21211110200122 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, two hundred thousand, one hundred twenty-two".