212485147 has 4 divisors (see below), whose sum is σ = 242840176. Its totient is φ = 182130120.

The previous prime is 212485127. The next prime is 212485153. The reversal of 212485147 is 741584212.

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-212485147 is a prime.

It is a super-2 number, since 2×212485147² = 90299875391223218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212485127) 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, 15177504 + ... + 15177517.

It is an arithmetic number, because the mean of its divisors is an integer number (60710044).

Almost surely, 2^212485147 is an apocalyptic number.

212485147 is a deficient number, since it is larger than the sum of its proper divisors (30355029).

212485147 is an equidigital number, since it uses as much as digits as its factorization.

212485147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30355028.

The product of its digits is 17920, while the sum is 34.

The square root of 212485147 is about 14576.8702745137. The cubic root of 212485147 is about 596.7276922626.

The spelling of 212485147 in words is "two hundred twelve million, four hundred eighty-five thousand, one hundred forty-seven".