121033139 has 2 divisors, whose sum is σ = 121033140. Its totient is φ = 121033138.

The previous prime is 121033111. The next prime is 121033169. The reversal of 121033139 is 931330121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121033139 - 2¹² = 121029043 is a prime.

It is not a weakly prime, because it can be changed into another prime (121033109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516569 + 60516570.

It is an arithmetic number, because the mean of its divisors is an integer number (60516570).

Almost surely, 2^121033139 is an apocalyptic number.

121033139 is a deficient number, since it is larger than the sum of its proper divisors (1).

121033139 is an equidigital number, since it uses as much as digits as its factorization.

121033139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 121033139 is about 11001.5062150598. The cubic root of 121033139 is about 494.6538940303.

The spelling of 121033139 in words is "one hundred twenty-one million, thirty-three thousand, one hundred thirty-nine".