121001221139 has 2 divisors, whose sum is σ = 121001221140. Its totient is φ = 121001221138.

The previous prime is 121001221087. The next prime is 121001221189. The reversal of 121001221139 is 931122100121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001221139 is a prime.

It is not a weakly prime, because it can be changed into another prime (121001221189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500610569 + 60500610570.

It is an arithmetic number, because the mean of its divisors is an integer number (60500610570).

Almost surely, 2^121001221139 is an apocalyptic number.

121001221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001221139 is an equidigital number, since it uses as much as digits as its factorization.

121001221139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 121001221139 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, one hundred thirty-nine".