121002213223 has 4 divisors (see below), whose sum is σ = 121113123768. Its totient is φ = 120891302680.

The previous prime is 121002213197. The next prime is 121002213247. The reversal of 121002213223 is 322312200121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121002213223 - 2²¹ = 121000116071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121002213223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002213263) 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, 55453636 + ... + 55455817.

It is an arithmetic number, because the mean of its divisors is an integer number (30278280942).

Almost surely, 2^121002213223 is an apocalyptic number.

121002213223 is a deficient number, since it is larger than the sum of its proper divisors (110910545).

121002213223 is a wasteful number, since it uses less digits than its factorization.

121002213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110910544.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121002213223 its reverse (322312200121), we get a palindrome (443314413344).

The spelling of 121002213223 in words is "one hundred twenty-one billion, two million, two hundred thirteen thousand, two hundred twenty-three".