4102213521 has 16 divisors (see below), whose sum is σ = 6252771200. Its totient is φ = 2343454848.

The previous prime is 4102213519. The next prime is 4102213529. The reversal of 4102213521 is 1253122014.

4102213521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4102213521 - 2¹ = 4102213519 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4102213529) 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, 53235 + ... + 105063.

It is an arithmetic number, because the mean of its divisors is an integer number (390798200).

Almost surely, 2^4102213521 is an apocalyptic number.

It is an amenable number.

4102213521 is a deficient number, since it is larger than the sum of its proper divisors (2150557679).

4102213521 is a wasteful number, since it uses less digits than its factorization.

4102213521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55608.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4102213521 is about 64048.5247371085. The cubic root of 4102213521 is about 1600.8086434545.

Adding to 4102213521 its reverse (1253122014), we get a palindrome (5355335535).

The spelling of 4102213521 in words is "four billion, one hundred two million, two hundred thirteen thousand, five hundred twenty-one".