121201223 has 18 divisors (see below), whose sum is σ = 144281592. Its totient is φ = 101690160.

The previous prime is 121201217. The next prime is 121201229. The reversal of 121201223 is 322102121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121201217) and next prime (121201229).

It is not a de Polignac number, because 121201223 - 2⁸ = 121200967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121201198 and 121201207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17486 + ... + 23412.

It is an arithmetic number, because the mean of its divisors is an integer number (8015644).

Almost surely, 2^121201223 is an apocalyptic number.

121201223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121201223 is a deficient number, since it is larger than the sum of its proper divisors (23080369).

121201223 is a wasteful number, since it uses less digits than its factorization.

121201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975 (or 5951 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121201223 is about 11009.1427005013. The cubic root of 121201223 is about 494.8827705930.

Adding to 121201223 its reverse (322102121), we get a palindrome (443303344).

The spelling of 121201223 in words is "one hundred twenty-one million, two hundred one thousand, two hundred twenty-three".