2152052221 has 8 divisors (see below), whose sum is σ = 2353991904. Its totient is φ = 1951162320.

The previous prime is 2152052183. The next prime is 2152052237. The reversal of 2152052221 is 1222502512.

2152052221 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 2152052221 - 2¹³ = 2152044029 is a prime.

It is a super-2 number, since 2×2152052221² = 9262657523822065682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2152052192 and 2152052201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152052251) 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, 258151 + ... + 266356.

It is an arithmetic number, because the mean of its divisors is an integer number (294248988).

Almost surely, 2^2152052221 is an apocalyptic number.

It is an amenable number.

2152052221 is a deficient number, since it is larger than the sum of its proper divisors (201939683).

2152052221 is a wasteful number, since it uses less digits than its factorization.

2152052221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524891.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2152052221 is about 46390.2168673525. The cubic root of 2152052221 is about 1291.0734051948.

Adding to 2152052221 its reverse (1222502512), we get a palindrome (3374554733).

The spelling of 2152052221 in words is "two billion, one hundred fifty-two million, fifty-two thousand, two hundred twenty-one".