2130881921 has 8 divisors (see below), whose sum is σ = 2436479424. Its totient is φ = 1825580880.

The previous prime is 2130881917. The next prime is 2130881953. The reversal of 2130881921 is 1291880312.

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

It is a cyclic number.

It is not a de Polignac number, because 2130881921 - 2² = 2130881917 is a prime.

It is a super-2 number, since 2×2130881921² = 9081315522489300482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130881021) 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, 58490 + ... + 87651.

It is an arithmetic number, because the mean of its divisors is an integer number (304559928).

Almost surely, 2^2130881921 is an apocalyptic number.

It is an amenable number.

2130881921 is a deficient number, since it is larger than the sum of its proper divisors (305597503).

2130881921 is a wasteful number, since it uses less digits than its factorization.

2130881921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148231.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 2130881921 is about 46161.4765903345. The cubic root of 2130881921 is about 1286.8259045300.

The spelling of 2130881921 in words is "two billion, one hundred thirty million, eight hundred eighty-one thousand, nine hundred twenty-one".