1200011020139 has 2 divisors, whose sum is σ = 1200011020140. Its totient is φ = 1200011020138.

The previous prime is 1200011020099. The next prime is 1200011020211. The reversal of 1200011020139 is 9310201100021.

It is a weak prime.

It is an emirp because it is prime and its reverse (9310201100021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200011020139 - 2¹⁶ = 1200010954603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200011020139.

It is not a weakly prime, because it can be changed into another prime (1200011020739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600005510069 + 600005510070.

It is an arithmetic number, because the mean of its divisors is an integer number (600005510070).

Almost surely, 2^{1200011020139} is an apocalyptic number.

1200011020139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200011020139 is an equidigital number, since it uses as much as digits as its factorization.

1200011020139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 1200011020139 in words is "one trillion, two hundred billion, eleven million, twenty thousand, one hundred thirty-nine".