22110212002121 has 4 divisors (see below), whose sum is σ = 22278992246544. Its totient is φ = 21941431757700.

The previous prime is 22110212002103. The next prime is 22110212002169. The reversal of 22110212002121 is 12120021201122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22110212002121 - 2¹⁴ = 22110211985737 is a prime.

It is a super-2 number, since 2×22110212002121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22110212002121.

It is not an unprimeable number, because it can be changed into a prime (22110212002321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84390122015 + ... + 84390122276.

It is an arithmetic number, because the mean of its divisors is an integer number (5569748061636).

Almost surely, 2^{22110212002121} is an apocalyptic number.

It is an amenable number.

22110212002121 is a deficient number, since it is larger than the sum of its proper divisors (168780244423).

22110212002121 is a wasteful number, since it uses less digits than its factorization.

22110212002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168780244422.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22110212002121 its reverse (12120021201122), we get a palindrome (34230233203243).

The spelling of 22110212002121 in words is "twenty-two trillion, one hundred ten billion, two hundred twelve million, two thousand, one hundred twenty-one".