1010221139 has 2 divisors, whose sum is σ = 1010221140. Its totient is φ = 1010221138.

The previous prime is 1010221123. The next prime is 1010221159. The reversal of 1010221139 is 9311220101.

It is an a-pointer prime, because the next prime (1010221159) can be obtained adding 1010221139 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1010221139 - 2⁴ = 1010221123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1010221139.

It is not a weakly prime, because it can be changed into another prime (1010221159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505110569 + 505110570.

It is an arithmetic number, because the mean of its divisors is an integer number (505110570).

Almost surely, 2^1010221139 is an apocalyptic number.

1010221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010221139 is an equidigital number, since it uses as much as digits as its factorization.

1010221139 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 square root of 1010221139 is about 31783.9761357826. The cubic root of 1010221139 is about 1003.3955038376.

The spelling of 1010221139 in words is "one billion, ten million, two hundred twenty-one thousand, one hundred thirty-nine".