2121847167 has 12 divisors (see below), whose sum is σ = 3109704920. Its totient is φ = 1285967760.

The previous prime is 2121847153. The next prime is 2121847181. The reversal of 2121847167 is 7617481212.

It is an interprime number because it is at equal distance from previous prime (2121847153) and next prime (2121847181).

It is not a de Polignac number, because 2121847167 - 2¹² = 2121843071 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121847067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2922292 + ... + 2923017.

Almost surely, 2^2121847167 is an apocalyptic number.

2121847167 is a deficient number, since it is larger than the sum of its proper divisors (987857753).

2121847167 is a wasteful number, since it uses less digits than its factorization.

2121847167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5845334 (or 5845323 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 2121847167 is about 46063.5123172343. The cubic root of 2121847167 is about 1285.0046514793.

The spelling of 2121847167 in words is "two billion, one hundred twenty-one million, eight hundred forty-seven thousand, one hundred sixty-seven".