22110010212121 has 4 divisors (see below), whose sum is σ = 23810780228452. Its totient is φ = 20409240195792.

The previous prime is 22110010212061. The next prime is 22110010212149. The reversal of 22110010212121 is 12121201001122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10826699256025 + 11283310956096 = 3290395^2 + 3359064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22110010212121 - 2¹⁵ = 22110010179353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110010212095 and 22110010212104.

It is not an unprimeable number, because it can be changed into a prime (22110010212421) 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, 850385008146 + ... + 850385008171.

It is an arithmetic number, because the mean of its divisors is an integer number (5952695057113).

Almost surely, 2^{22110010212121} is an apocalyptic number.

It is an amenable number.

22110010212121 is a deficient number, since it is larger than the sum of its proper divisors (1700770016331).

22110010212121 is a wasteful number, since it uses less digits than its factorization.

22110010212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700770016330.

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

Adding to 22110010212121 its reverse (12121201001122), we get a palindrome (34231211213243).

The spelling of 22110010212121 in words is "twenty-two trillion, one hundred ten billion, ten million, two hundred twelve thousand, one hundred twenty-one".