213021023002 has 16 divisors (see below), whose sum is σ = 328442735592. Its totient is φ = 103544939520.

The previous prime is 213021022979. The next prime is 213021023003. The reversal of 213021023002 is 200320120312.

It can be written as a sum of positive squares in 4 ways, for example, as 209792396961 + 3228626041 = 458031^2 + 56821^2 .

It is a super-2 number, since 2×213021023002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213021023003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118199 + ... + 1294762.

Almost surely, 2^213021023002 is an apocalyptic number.

213021023002 is a deficient number, since it is larger than the sum of its proper divisors (115421712590).

213021023002 is a wasteful number, since it uses less digits than its factorization.

213021023002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414193.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 213021023002 its reverse (200320120312), we get a palindrome (413341143314).

The spelling of 213021023002 in words is "two hundred thirteen billion, twenty-one million, twenty-three thousand, two".