2211321000121 has 4 divisors (see below), whose sum is σ = 2231987551632. Its totient is φ = 2190654448612.

The previous prime is 2211321000037. The next prime is 2211321000173. The reversal of 2211321000121 is 1210001231122.

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 2211321000121 - 2⁹ = 2211320999609 is a prime.

It is a super-2 number, since 2×2211321000121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211321000095 and 2211321000104.

It is not an unprimeable number, because it can be changed into a prime (2211321000821) 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, 10333275595 + ... + 10333275808.

It is an arithmetic number, because the mean of its divisors is an integer number (557996887908).

Almost surely, 2^{2211321000121} is an apocalyptic number.

It is an amenable number.

2211321000121 is a deficient number, since it is larger than the sum of its proper divisors (20666551511).

2211321000121 is a wasteful number, since it uses less digits than its factorization.

2211321000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666551510.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2211321000121 its reverse (1210001231122), we get a palindrome (3421322231243).

The spelling of 2211321000121 in words is "two trillion, two hundred eleven billion, three hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.