1220109990139 has 2 divisors, whose sum is σ = 1220109990140. Its totient is φ = 1220109990138.

The previous prime is 1220109990131. The next prime is 1220109990161. The reversal of 1220109990139 is 9310999010221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220109990139 - 2³ = 1220109990131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220109990131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610054995069 + 610054995070.

It is an arithmetic number, because the mean of its divisors is an integer number (610054995070).

Almost surely, 2^{1220109990139} is an apocalyptic number.

1220109990139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220109990139 is an equidigital number, since it uses as much as digits as its factorization.

1220109990139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 1220109990139 in words is "one trillion, two hundred twenty billion, one hundred nine million, nine hundred ninety thousand, one hundred thirty-nine".