121223010211 has 4 divisors (see below), whose sum is σ = 122930376624. Its totient is φ = 119515643800.

The previous prime is 121223010179. The next prime is 121223010217. The reversal of 121223010211 is 112010322121.

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 121223010211 - 2⁵ = 121223010179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223010217) 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, 853683100 + ... + 853683241.

It is an arithmetic number, because the mean of its divisors is an integer number (30732594156).

Almost surely, 2^121223010211 is an apocalyptic number.

121223010211 is a deficient number, since it is larger than the sum of its proper divisors (1707366413).

121223010211 is an equidigital number, since it uses as much as digits as its factorization.

121223010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707366412.

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

Adding to 121223010211 its reverse (112010322121), we get a palindrome (233233332332).

The spelling of 121223010211 in words is "one hundred twenty-one billion, two hundred twenty-three million, ten thousand, two hundred eleven".