212001634 has 16 divisors (see below), whose sum is σ = 342715968. Its totient is φ = 97774992.

The previous prime is 212001619. The next prime is 212001659. The reversal of 212001634 is 436100212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52309 + ... + 56215.

It is an arithmetic number, because the mean of its divisors is an integer number (21419748).

Almost surely, 2^212001634 is an apocalyptic number.

212001634 is a deficient number, since it is larger than the sum of its proper divisors (130714334).

212001634 is a wasteful number, since it uses less digits than its factorization.

212001634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 212001634 is about 14560.2758902433. The cubic root of 212001634 is about 596.2747277050.

Adding to 212001634 its reverse (436100212), we get a palindrome (648101846).

The spelling of 212001634 in words is "two hundred twelve million, one thousand, six hundred thirty-four".