121262381 has 2 divisors, whose sum is σ = 121262382. Its totient is φ = 121262380.

The previous prime is 121262363. The next prime is 121262413. The reversal of 121262381 is 183262121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 3865156 = 10835^2 + 1966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121262381 is a prime.

It is a super-2 number, since 2×121262381² = 29409130091578322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121262381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121265381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60631190 + 60631191.

It is an arithmetic number, because the mean of its divisors is an integer number (60631191).

Almost surely, 2^121262381 is an apocalyptic number.

It is an amenable number.

121262381 is a deficient number, since it is larger than the sum of its proper divisors (1).

121262381 is an equidigital number, since it uses as much as digits as its factorization.

121262381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 121262381 is about 11011.9199506716. The cubic root of 121262381 is about 494.9659956915.

The spelling of 121262381 in words is "one hundred twenty-one million, two hundred sixty-two thousand, three hundred eighty-one".