212111398 has 4 divisors (see below), whose sum is σ = 318167100. Its totient is φ = 106055698.

The previous prime is 212111377. The next prime is 212111399. The reversal of 212111398 is 893111212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53027848 + ... + 53027851.

It is an arithmetic number, because the mean of its divisors is an integer number (79541775).

Almost surely, 2^212111398 is an apocalyptic number.

212111398 is a deficient number, since it is larger than the sum of its proper divisors (106055702).

212111398 is a wasteful number, since it uses less digits than its factorization.

212111398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106055701.

The product of its digits is 864, while the sum is 28.

The square root of 212111398 is about 14564.0446991899. The cubic root of 212111398 is about 596.3776171745.

The spelling of 212111398 in words is "two hundred twelve million, one hundred eleven thousand, three hundred ninety-eight".