220030012129 has 4 divisors (see below), whose sum is σ = 220032563220. Its totient is φ = 220027461040.

The previous prime is 220030012121. The next prime is 220030012157. The reversal of 220030012129 is 921210030022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20353302225 + 199676709904 = 142665^2 + 446852^2 .

It is a cyclic number.

It is not a de Polignac number, because 220030012129 - 2³ = 220030012121 is a prime.

It is a super-2 number, since 2×220030012129² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220030012121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141474 + ... + 1320235.

It is an arithmetic number, because the mean of its divisors is an integer number (55008140805).

Almost surely, 2^220030012129 is an apocalyptic number.

It is an amenable number.

220030012129 is a deficient number, since it is larger than the sum of its proper divisors (2551091).

220030012129 is an equidigital number, since it uses as much as digits as its factorization.

220030012129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551090.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 220030012129 in words is "two hundred twenty billion, thirty million, twelve thousand, one hundred twenty-nine".