212512101 has 8 divisors (see below), whose sum is σ = 283525920. Its totient is φ = 141586512.

The previous prime is 212512073. The next prime is 212512103. The reversal of 212512101 is 101215212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212512101 - 2²² = 208317797 is a prime.

It is a super-2 number, since 2×212512101² = 90322786142868402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212512103) 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, 16215 + ... + 26228.

It is an arithmetic number, because the mean of its divisors is an integer number (35440740).

Almost surely, 2^212512101 is an apocalyptic number.

It is an amenable number.

212512101 is a deficient number, since it is larger than the sum of its proper divisors (71013819).

212512101 is a wasteful number, since it uses less digits than its factorization.

212512101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44115.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 212512101 is about 14577.7947920802. The cubic root of 212512101 is about 596.7529230742.

Adding to 212512101 its reverse (101215212), we get a palindrome (313727313).

The spelling of 212512101 in words is "two hundred twelve million, five hundred twelve thousand, one hundred one".