22110121212021 has 32 divisors (see below), whose sum is σ = 34687605991680. Its totient is φ = 13870992066048.

The previous prime is 22110121211977. The next prime is 22110121212103. The reversal of 22110121212021 is 12021212101122.

It is not a de Polignac number, because 22110121212021 - 2¹⁵ = 22110121179253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22110121211985 and 22110121212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110221212021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365121 + ... + 6659846.

It is an arithmetic number, because the mean of its divisors is an integer number (1083987687240).

Almost surely, 2^{22110121212021} is an apocalyptic number.

It is an amenable number.

22110121212021 is a deficient number, since it is larger than the sum of its proper divisors (12577484779659).

22110121212021 is a wasteful number, since it uses less digits than its factorization.

22110121212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031850 (or 7031844 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22110121212021 its reverse (12021212101122), we get a palindrome (34131333313143).

The spelling of 22110121212021 in words is "twenty-two trillion, one hundred ten billion, one hundred twenty-one million, two hundred twelve thousand, twenty-one".