121202112223 has 2 divisors, whose sum is σ = 121202112224. Its totient is φ = 121202112222.

The previous prime is 121202112209. The next prime is 121202112281. The reversal of 121202112223 is 322211202121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202112223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121202112223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202112023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601056111 + 60601056112.

It is an arithmetic number, because the mean of its divisors is an integer number (60601056112).

Almost surely, 2^121202112223 is an apocalyptic number.

121202112223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202112223 is an equidigital number, since it uses as much as digits as its factorization.

121202112223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121202112223 its reverse (322211202121), we get a palindrome (443413314344).

The spelling of 121202112223 in words is "one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred twenty-three".