212166103 has 32 divisors (see below), whose sum is σ = 249359040. Its totient is φ = 179159040.

The previous prime is 212166091. The next prime is 212166107. The reversal of 212166103 is 301661212.

It is a cyclic number.

It is not a de Polignac number, because 212166103 - 2²¹ = 210068951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212166107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489775 + ... + 490207.

It is an arithmetic number, because the mean of its divisors is an integer number (7792470).

Almost surely, 2^212166103 is an apocalyptic number.

212166103 is a deficient number, since it is larger than the sum of its proper divisors (37192937).

212166103 is a wasteful number, since it uses less digits than its factorization.

212166103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212166103 is about 14565.9226621591. The cubic root of 212166103 is about 596.4288827415.

The spelling of 212166103 in words is "two hundred twelve million, one hundred sixty-six thousand, one hundred three".