1020111100139 has 2 divisors, whose sum is σ = 1020111100140. Its totient is φ = 1020111100138.

The previous prime is 1020111100103. The next prime is 1020111100147. The reversal of 1020111100139 is 9310011110201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020111100139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020111100139.

It is not a weakly prime, because it can be changed into another prime (1020111100199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510055550069 + 510055550070.

It is an arithmetic number, because the mean of its divisors is an integer number (510055550070).

Almost surely, 2^{1020111100139} is an apocalyptic number.

1020111100139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020111100139 is an equidigital number, since it uses as much as digits as its factorization.

1020111100139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 1020111100139 in words is "one trillion, twenty billion, one hundred eleven million, one hundred thousand, one hundred thirty-nine".