212012554 has 8 divisors (see below), whose sum is σ = 342481860. Its totient is φ = 97851936.

The previous prime is 212012539. The next prime is 212012573. The reversal of 212012554 is 455210212.

It can be written as a sum of positive squares in 2 ways, for example, as 209525625 + 2486929 = 14475^2 + 1577^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 4077139 + ... + 4077190.

Almost surely, 2^212012554 is an apocalyptic number.

212012554 is a deficient number, since it is larger than the sum of its proper divisors (130469306).

212012554 is a wasteful number, since it uses less digits than its factorization.

212012554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8154344.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 212012554 is about 14560.6508783090. The cubic root of 212012554 is about 596.2849653749.

Adding to 212012554 its reverse (455210212), we get a palindrome (667222766).

The spelling of 212012554 in words is "two hundred twelve million, twelve thousand, five hundred fifty-four".