2152021499 has 4 divisors (see below), whose sum is σ = 2162945664. Its totient is φ = 2141097336.

The previous prime is 2152021471. The next prime is 2152021507. The reversal of 2152021499 is 9941202512.

2152021499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152021499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152021409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5461787 + ... + 5462180.

It is an arithmetic number, because the mean of its divisors is an integer number (540736416).

Almost surely, 2^2152021499 is an apocalyptic number.

2152021499 is a deficient number, since it is larger than the sum of its proper divisors (10924165).

2152021499 is a wasteful number, since it uses less digits than its factorization.

2152021499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10924164.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2152021499 is about 46389.8857403206. The cubic root of 2152021499 is about 1291.0672615171.

The spelling of 2152021499 in words is "two billion, one hundred fifty-two million, twenty-one thousand, four hundred ninety-nine".