22110202121 has 16 divisors (see below), whose sum is σ = 26098136064. Its totient is φ = 18337841424.

The previous prime is 22110202117. The next prime is 22110202187. The reversal of 22110202121 is 12120201122.

It is not a de Polignac number, because 22110202121 - 2² = 22110202117 is a prime.

It is a super-2 number, since 2×22110202121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22110202096 and 22110202105.

It is not an unprimeable number, because it can be changed into a prime (22110202111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311045 + ... + 375458.

It is an arithmetic number, because the mean of its divisors is an integer number (1631133504).

Almost surely, 2^22110202121 is an apocalyptic number.

It is an amenable number.

22110202121 is a deficient number, since it is larger than the sum of its proper divisors (3987933943).

22110202121 is a wasteful number, since it uses less digits than its factorization.

22110202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686660.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22110202121 its reverse (12120201122), we get a palindrome (34230403243).

Subtracting from 22110202121 its reverse (12120201122), we obtain a palindrome (9990000999).

The spelling of 22110202121 in words is "twenty-two billion, one hundred ten million, two hundred two thousand, one hundred twenty-one".