2212021987 has 8 divisors (see below), whose sum is σ = 2637939456. Its totient is φ = 1813583112.

The previous prime is 2212021943. The next prime is 2212021991. The reversal of 2212021987 is 7891202122.

2212021987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2212021987 - 2⁷ = 2212021859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212021937) 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, 6869473 + ... + 6869794.

It is an arithmetic number, because the mean of its divisors is an integer number (329742432).

Almost surely, 2^2212021987 is an apocalyptic number.

2212021987 is a deficient number, since it is larger than the sum of its proper divisors (425917469).

2212021987 is a wasteful number, since it uses less digits than its factorization.

2212021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13739297.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2212021987 is about 47032.1378102250. The cubic root of 2212021987 is about 1302.9561891232.

The spelling of 2212021987 in words is "two billion, two hundred twelve million, twenty-one thousand, nine hundred eighty-seven".