2887880121 has 45 divisors (see below), whose sum is σ = 5024209311. Its totient is φ = 1648282608.

The previous prime is 2887880119. The next prime is 2887880123. The reversal of 2887880121 is 1210887882.

The square root of 2887880121 is 53739.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (2887880119) and next prime (2887880123).

It can be written as a sum of positive squares in only one way, i.e., 166797225 + 2721082896 = 12915^2 + 52164^2 .

It is not a de Polignac number, because 2887880121 - 2¹ = 2887880119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2887880123) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3385131 + ... + 3385983.

Almost surely, 2^2887880121 is an apocalyptic number.

2887880121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2887880121 is the 53739-th square number.

2887880121 is the 26870-th centered octagonal number.

It is an amenable number.

2887880121 is a deficient number, since it is larger than the sum of its proper divisors (2136329190).

2887880121 is an frugal number, since it uses more digits than its factorization.

2887880121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The cubic root of 2887880121 is about 1424.0537673868.

The spelling of 2887880121 in words is "two billion, eight hundred eighty-seven million, eight hundred eighty thousand, one hundred twenty-one".