220102129 has 8 divisors (see below), whose sum is σ = 239381352. Its totient is φ = 201158400.

The previous prime is 220102117. The next prime is 220102133. The reversal of 220102129 is 921201022.

It can be written as a sum of positive squares in 4 ways, for example, as 2480625 + 217621504 = 1575^2 + 14752^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220102129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220102189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82504 + ... + 85129.

It is an arithmetic number, because the mean of its divisors is an integer number (29922669).

Almost surely, 2^220102129 is an apocalyptic number.

It is an amenable number.

220102129 is a deficient number, since it is larger than the sum of its proper divisors (19279223).

220102129 is a wasteful number, since it uses less digits than its factorization.

220102129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167747.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 220102129 is about 14835.8393426189. The cubic root of 220102129 is about 603.7744733866.

The spelling of 220102129 in words is "two hundred twenty million, one hundred two thousand, one hundred twenty-nine".