212311101 has 8 divisors (see below), whose sum is σ = 283205664. Its totient is φ = 141478640.

The previous prime is 212311093. The next prime is 212311103. The reversal of 212311101 is 101113212.

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 212311101 - 2³ = 212311093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311103) 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, 6855 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (35400708).

Almost surely, 2^212311101 is an apocalyptic number.

It is an amenable number.

212311101 is a deficient number, since it is larger than the sum of its proper divisors (70894563).

212311101 is a wasteful number, since it uses less digits than its factorization.

212311101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31051.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 212311101 is about 14570.8991143306. The cubic root of 212311101 is about 596.5647217539.

Adding to 212311101 its reverse (101113212), we get a palindrome (313424313).

The spelling of 212311101 in words is "two hundred twelve million, three hundred eleven thousand, one hundred one".