121011223 has 2 divisors, whose sum is σ = 121011224. Its totient is φ = 121011222.

The previous prime is 121011199. The next prime is 121011299. The reversal of 121011223 is 322110121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121011523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505611 + 60505612.

It is an arithmetic number, because the mean of its divisors is an integer number (60505612).

Almost surely, 2^121011223 is an apocalyptic number.

121011223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011223 is an equidigital number, since it uses as much as digits as its factorization.

121011223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121011223 is about 11000.5101245351. The cubic root of 121011223 is about 494.6240358464.

Adding to 121011223 its reverse (322110121), we get a palindrome (443121344).

The spelling of 121011223 in words is "one hundred twenty-one million, eleven thousand, two hundred twenty-three".