212129269 has 8 divisors (see below), whose sum is σ = 235208160. Its totient is φ = 189682800.

The previous prime is 212129257. The next prime is 212129273. The reversal of 212129269 is 962921212.

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 212129269 - 2⁹ = 212128757 is a prime.

It is a super-2 number, since 2×212129269² = 89997653532948722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212129209) 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, 157399 + ... + 158740.

It is an arithmetic number, because the mean of its divisors is an integer number (29401020).

Almost surely, 2^212129269 is an apocalyptic number.

It is an amenable number.

212129269 is a deficient number, since it is larger than the sum of its proper divisors (23078891).

212129269 is a wasteful number, since it uses less digits than its factorization.

212129269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316211.

The product of its digits is 7776, while the sum is 34.

The square root of 212129269 is about 14564.6582177544. The cubic root of 212129269 is about 596.3943655517.

The spelling of 212129269 in words is "two hundred twelve million, one hundred twenty-nine thousand, two hundred sixty-nine".