212011534 has 24 divisors (see below), whose sum is σ = 371728008. Its totient is φ = 90422640.

The previous prime is 212011529. The next prime is 212011559. The reversal of 212011534 is 435110212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15552 + ... + 25804.

It is an arithmetic number, because the mean of its divisors is an integer number (15488667).

Almost surely, 2^212011534 is an apocalyptic number.

212011534 is a deficient number, since it is larger than the sum of its proper divisors (159716474).

212011534 is a wasteful number, since it uses less digits than its factorization.

212011534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480 (or 10473 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 212011534 is about 14560.6158523601. The cubic root of 212011534 is about 596.2840091239.

Adding to 212011534 its reverse (435110212), we get a palindrome (647121746).

The spelling of 212011534 in words is "two hundred twelve million, eleven thousand, five hundred thirty-four".