121223381 has 2 divisors, whose sum is σ = 121223382. Its totient is φ = 121223380.

The previous prime is 121223371. The next prime is 121223411. The reversal of 121223381 is 183322121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120253156 + 970225 = 10966^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 121223381 - 2¹⁰ = 121222357 is a prime.

It is a super-2 number, since 2×121223381² = 29390216202142322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121223351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611690 + 60611691.

It is an arithmetic number, because the mean of its divisors is an integer number (60611691).

Almost surely, 2^121223381 is an apocalyptic number.

It is an amenable number.

121223381 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223381 is an equidigital number, since it uses as much as digits as its factorization.

121223381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 121223381 is about 11010.1489999000. The cubic root of 121223381 is about 494.9129269011.

The spelling of 121223381 in words is "one hundred twenty-one million, two hundred twenty-three thousand, three hundred eighty-one".