2220691129 has 2 divisors, whose sum is σ = 2220691130. Its totient is φ = 2220691128.

The previous prime is 2220691111. The next prime is 2220691157. The reversal of 2220691129 is 9211960222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982297529 + 238393600 = 44523^2 + 15440^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220691129 - 2⁷ = 2220691001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220691094 and 2220691103.

It is not a weakly prime, because it can be changed into another prime (2220691189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110345564 + 1110345565.

It is an arithmetic number, because the mean of its divisors is an integer number (1110345565).

Almost surely, 2^2220691129 is an apocalyptic number.

It is an amenable number.

2220691129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220691129 is an equidigital number, since it uses as much as digits as its factorization.

2220691129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2220691129 is about 47124.2095848832. The cubic root of 2220691129 is about 1304.6561101671.

The spelling of 2220691129 in words is "two billion, two hundred twenty million, six hundred ninety-one thousand, one hundred twenty-nine".