212315602 has 4 divisors (see below), whose sum is σ = 318473406. Its totient is φ = 106157800.

The previous prime is 212315573. The next prime is 212315603. The reversal of 212315602 is 206513212.

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., 182493081 + 29822521 = 13509^2 + 5461^2 .

It is not an unprimeable number, because it can be changed into a prime (212315603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53078899 + ... + 53078902.

Almost surely, 2^212315602 is an apocalyptic number.

212315602 is a deficient number, since it is larger than the sum of its proper divisors (106157804).

212315602 is a wasteful number, since it uses less digits than its factorization.

212315602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106157803.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 212315602 is about 14571.0535652025. The cubic root of 212315602 is about 596.5689374525.

Adding to 212315602 its reverse (206513212), we get a palindrome (418828814).

The spelling of 212315602 in words is "two hundred twelve million, three hundred fifteen thousand, six hundred two".