1220221110139 has 2 divisors, whose sum is σ = 1220221110140. Its totient is φ = 1220221110138.

The previous prime is 1220221110041. The next prime is 1220221110161. The reversal of 1220221110139 is 9310111220221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220221110139 - 2³⁷ = 1082782156667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220221110169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610110555069 + 610110555070.

It is an arithmetic number, because the mean of its divisors is an integer number (610110555070).

Almost surely, 2^{1220221110139} is an apocalyptic number.

1220221110139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220221110139 is an equidigital number, since it uses as much as digits as its factorization.

1220221110139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1220221110139 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred thirty-nine".