2232121987 has 2 divisors, whose sum is σ = 2232121988. Its totient is φ = 2232121986.

The previous prime is 2232121973. The next prime is 2232122017. The reversal of 2232121987 is 7891212322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2232121987 is a prime.

It is a super-3 number, since 3×2232121987³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2232121937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116060993 + 1116060994.

It is an arithmetic number, because the mean of its divisors is an integer number (1116060994).

Almost surely, 2^2232121987 is an apocalyptic number.

2232121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2232121987 is an equidigital number, since it uses as much as digits as its factorization.

2232121987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 2232121987 is about 47245.3382568058. The cubic root of 2232121987 is about 1306.8908233450.

The spelling of 2232121987 in words is "two billion, two hundred thirty-two million, one hundred twenty-one thousand, nine hundred eighty-seven".