212042504546 has 4 divisors (see below), whose sum is σ = 318063756822. Its totient is φ = 106021252272.

The previous prime is 212042504507. The next prime is 212042504573. The reversal of 212042504546 is 645405240212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208062787321 + 3979717225 = 456139^2 + 63085^2 .

It is a super-2 number, since 2×212042504546² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53010626135 + ... + 53010626138.

Almost surely, 2^212042504546 is an apocalyptic number.

212042504546 is a deficient number, since it is larger than the sum of its proper divisors (106021252276).

212042504546 is a wasteful number, since it uses less digits than its factorization.

212042504546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106021252275.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 212042504546 its reverse (645405240212), we get a palindrome (857447744758).

The spelling of 212042504546 in words is "two hundred twelve billion, forty-two million, five hundred four thousand, five hundred forty-six".