1011012139 has 2 divisors, whose sum is σ = 1011012140. Its totient is φ = 1011012138.

The previous prime is 1011012103. The next prime is 1011012157. The reversal of 1011012139 is 9312101101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011012139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011012539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505506069 + 505506070.

It is an arithmetic number, because the mean of its divisors is an integer number (505506070).

Almost surely, 2^1011012139 is an apocalyptic number.

1011012139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011012139 is an equidigital number, since it uses as much as digits as its factorization.

1011012139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1011012139 is about 31796.4170780294. The cubic root of 1011012139 is about 1003.6573206985.

The spelling of 1011012139 in words is "one billion, eleven million, twelve thousand, one hundred thirty-nine".