121027381 has 4 divisors (see below), whose sum is σ = 122732064. Its totient is φ = 119322700.

The previous prime is 121027373. The next prime is 121027399. The reversal of 121027381 is 183720121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121027381 - 2³ = 121027373 is a prime.

It is a super-2 number, since 2×121027381² = 29295253903438322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121027331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852235 + ... + 852376.

It is an arithmetic number, because the mean of its divisors is an integer number (30683016).

Almost surely, 2^121027381 is an apocalyptic number.

It is an amenable number.

121027381 is a deficient number, since it is larger than the sum of its proper divisors (1704683).

121027381 is an equidigital number, since it uses as much as digits as its factorization.

121027381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704682.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 121027381 is about 11001.2445205077. The cubic root of 121027381 is about 494.6460497260.

The spelling of 121027381 in words is "one hundred twenty-one million, twenty-seven thousand, three hundred eighty-one".