20321213002 has 8 divisors (see below), whose sum is σ = 30488860836. Its totient is φ = 10158259392.

The previous prime is 20321212993. The next prime is 20321213009. The reversal of 20321213002 is 20031212302.

It can be written as a sum of positive squares in 2 ways, for example, as 12407509321 + 7913703681 = 111389^2 + 88959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20321213009) 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, 1162713 + ... + 1180060.

Almost surely, 2^20321213002 is an apocalyptic number.

20321213002 is a deficient number, since it is larger than the sum of its proper divisors (10167647834).

20321213002 is a wasteful number, since it uses less digits than its factorization.

20321213002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347112.

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

Adding to 20321213002 its reverse (20031212302), we get a palindrome (40352425304).

The spelling of 20321213002 in words is "twenty billion, three hundred twenty-one million, two hundred thirteen thousand, two".