22011210002121 has 16 divisors (see below), whose sum is σ = 30624638046336. Its totient is φ = 14035975390976.

The previous prime is 22011210002083. The next prime is 22011210002179. The reversal of 22011210002121 is 12120001211022.

It is a cyclic number.

It is not a de Polignac number, because 22011210002121 - 2²¹ = 22011207904969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011210002121.

It is not an unprimeable number, because it can be changed into a prime (22011210000121) 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, 4511491 + ... + 8023463.

It is an arithmetic number, because the mean of its divisors is an integer number (1914039877896).

Almost surely, 2^{22011210002121} is an apocalyptic number.

It is an amenable number.

22011210002121 is a deficient number, since it is larger than the sum of its proper divisors (8613428044215).

22011210002121 is a wasteful number, since it uses less digits than its factorization.

22011210002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602832.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22011210002121 its reverse (12120001211022), we get a palindrome (34131211213143).

The spelling of 22011210002121 in words is "twenty-two trillion, eleven billion, two hundred ten million, two thousand, one hundred twenty-one".