2208929121 has 24 divisors (see below), whose sum is σ = 3661641984. Its totient is φ = 1256999040.

The previous prime is 2208929089. The next prime is 2208929167. The reversal of 2208929121 is 1219298022.

It is not a de Polignac number, because 2208929121 - 2⁵ = 2208929089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2208939121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57561 + ... + 87926.

It is an arithmetic number, because the mean of its divisors is an integer number (152568416).

Almost surely, 2^2208929121 is an apocalyptic number.

2208929121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2208929121 is a deficient number, since it is larger than the sum of its proper divisors (1452712863).

2208929121 is a wasteful number, since it uses less digits than its factorization.

2208929121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145741 (or 145738 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2208929121 is about 46999.2459620365. The cubic root of 2208929121 is about 1302.3486381165.

The spelling of 2208929121 in words is "two billion, two hundred eight million, nine hundred twenty-nine thousand, one hundred twenty-one".