2123000111221 has 8 divisors (see below), whose sum is σ = 2437894864800. Its totient is φ = 1828421148240.

The previous prime is 2123000111161. The next prime is 2123000111231. The reversal of 2123000111221 is 1221110003212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123000111221 - 2⁷ = 2123000111093 is a prime.

It is a super-2 number, since 2×2123000111221² (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 = 2123000111195 and 2123000111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123000111231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5078947426 + ... + 5078947843.

It is an arithmetic number, because the mean of its divisors is an integer number (304736858100).

Almost surely, 2^{2123000111221} is an apocalyptic number.

It is an amenable number.

2123000111221 is a deficient number, since it is larger than the sum of its proper divisors (314894753579).

2123000111221 is a wasteful number, since it uses less digits than its factorization.

2123000111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157895299.

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

Adding to 2123000111221 its reverse (1221110003212), we get a palindrome (3344110114433).

The spelling of 2123000111221 in words is "two trillion, one hundred twenty-three billion, one hundred eleven thousand, two hundred twenty-one".