221214302123 has 4 divisors (see below), whose sum is σ = 221215611120. Its totient is φ = 221212993128.

The previous prime is 221214302063. The next prime is 221214302143. The reversal of 221214302123 is 321203412122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321203412122 = 2 ⋅160601706061.

It is a cyclic number.

It is not a de Polignac number, because 221214302123 - 2²⁴ = 221197524907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221214302143) 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, 355463 + ... + 754176.

It is an arithmetic number, because the mean of its divisors is an integer number (55303902780).

Almost surely, 2^221214302123 is an apocalyptic number.

221214302123 is a deficient number, since it is larger than the sum of its proper divisors (1308997).

221214302123 is a wasteful number, since it uses less digits than its factorization.

221214302123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308996.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221214302123 its reverse (321203412122), we get a palindrome (542417714245).

The spelling of 221214302123 in words is "two hundred twenty-one billion, two hundred fourteen million, three hundred two thousand, one hundred twenty-three".