4001213213 has 4 divisors (see below), whose sum is σ = 4001355708. Its totient is φ = 4001070720.

The previous prime is 4001213191. The next prime is 4001213221. The reversal of 4001213213 is 3123121004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1132860964 + 2868352249 = 33658^2 + 53557^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001213213 - 2¹⁶ = 4001147677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4001213191 and 4001213200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001213113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13556 + ... + 90477.

It is an arithmetic number, because the mean of its divisors is an integer number (1000338927).

Almost surely, 2^4001213213 is an apocalyptic number.

It is an amenable number.

4001213213 is a deficient number, since it is larger than the sum of its proper divisors (142495).

4001213213 is a wasteful number, since it uses less digits than its factorization.

4001213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142494.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 4001213213 is about 63255.1437671277. The cubic root of 4001213213 is about 1587.5615237115.

Adding to 4001213213 its reverse (3123121004), we get a palindrome (7124334217).

The spelling of 4001213213 in words is "four billion, one million, two hundred thirteen thousand, two hundred thirteen".