3612521213 has 16 divisors (see below), whose sum is σ = 4273015680. Its totient is φ = 2988234816.

The previous prime is 3612521201. The next prime is 3612521219. The reversal of 3612521213 is 3121252163.

It is a happy number.

It is not a de Polignac number, because 3612521213 - 2¹⁴ = 3612504829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3612521219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719570 + ... + 724572.

It is an arithmetic number, because the mean of its divisors is an integer number (267063480).

Almost surely, 2^3612521213 is an apocalyptic number.

It is an amenable number.

3612521213 is a deficient number, since it is larger than the sum of its proper divisors (660494467).

3612521213 is a wasteful number, since it uses less digits than its factorization.

3612521213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8596.

The product of its digits is 2160, while the sum is 26.

The square root of 3612521213 is about 60104.2528694934. The cubic root of 3612521213 is about 1534.3936834462.

Adding to 3612521213 its reverse (3121252163), we get a palindrome (6733773376).

The spelling of 3612521213 in words is "three billion, six hundred twelve million, five hundred twenty-one thousand, two hundred thirteen".