21210201302 has 16 divisors (see below), whose sum is σ = 33237292032. Its totient is φ = 10139347560.

The previous prime is 21210201301. The next prime is 21210201329. The reversal of 21210201302 is 20310201212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210201301) 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, 2055698 + ... + 2065989.

It is an arithmetic number, because the mean of its divisors is an integer number (2077330752).

Almost surely, 2^21210201302 is an apocalyptic number.

21210201302 is a deficient number, since it is larger than the sum of its proper divisors (12027090730).

21210201302 is a wasteful number, since it uses less digits than its factorization.

21210201302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121803.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21210201302 its reverse (20310201212), we get a palindrome (41520402514).

The spelling of 21210201302 in words is "twenty-one billion, two hundred ten million, two hundred one thousand, three hundred two".