212271669 has 24 divisors (see below), whose sum is σ = 320611200. Its totient is φ = 135080352.

The previous prime is 212271659. The next prime is 212271679. The reversal of 212271669 is 966172212.

It is an interprime number because it is at equal distance from previous prime (212271659) and next prime (212271679).

It is not a de Polignac number, because 212271669 - 2⁷ = 212271541 is a prime.

It is a super-2 number, since 2×212271669² = 90118522920091122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212271649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151032 + ... + 152430.

It is an arithmetic number, because the mean of its divisors is an integer number (13358800).

Almost surely, 2^212271669 is an apocalyptic number.

It is an amenable number.

212271669 is a deficient number, since it is larger than the sum of its proper divisors (108339531).

212271669 is a wasteful number, since it uses less digits than its factorization.

212271669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2158 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 212271669 is about 14569.5459435083. The cubic root of 212271669 is about 596.5277866518.

The spelling of 212271669 in words is "two hundred twelve million, two hundred seventy-one thousand, six hundred sixty-nine".