3521023212 has 48 divisors (see below), whose sum is σ = 9543333632. Its totient is φ = 989513280.

The previous prime is 3521023169. The next prime is 3521023229. The reversal of 3521023212 is 2123201253.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338458 + ... + 348705.

Almost surely, 2^3521023212 is an apocalyptic number.

It is an amenable number.

3521023212 is an abundant number, since it is smaller than the sum of its proper divisors (6022310420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3521023212 is a wasteful number, since it uses less digits than its factorization.

3521023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687238 (or 687236 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3521023212 is about 59338.2103875740. The cubic root of 3521023212 is about 1521.3283649717.

Adding to 3521023212 its reverse (2123201253), we get a palindrome (5644224465).

The spelling of 3521023212 in words is "three billion, five hundred twenty-one million, twenty-three thousand, two hundred twelve".