22010121121 has 4 divisors (see below), whose sum is σ = 22010460292. Its totient is φ = 22009781952.

The previous prime is 22010121109. The next prime is 22010121127. The reversal of 22010121121 is 12112101022.

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 10440752400 + 11569368721 = 102180^2 + 107561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22010121121 is a prime.

It is a super-2 number, since 2×22010121121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22010121127) 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, 38436 + ... + 213301.

It is an arithmetic number, because the mean of its divisors is an integer number (5502615073).

Almost surely, 2^22010121121 is an apocalyptic number.

It is an amenable number.

22010121121 is a deficient number, since it is larger than the sum of its proper divisors (339171).

22010121121 is an equidigital number, since it uses as much as digits as its factorization.

22010121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339170.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22010121121 its reverse (12112101022), we get a palindrome (34122222143).

The spelling of 22010121121 in words is "twenty-two billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".