21302211022 has 4 divisors (see below), whose sum is σ = 31953316536. Its totient is φ = 10651105510.

The previous prime is 21302211017. The next prime is 21302211037. The reversal of 21302211022 is 22011220312.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21302210987 and 21302211005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325552754 + ... + 5325552757.

It is an arithmetic number, because the mean of its divisors is an integer number (7988329134).

Almost surely, 2^21302211022 is an apocalyptic number.

21302211022 is a deficient number, since it is larger than the sum of its proper divisors (10651105514).

21302211022 is a wasteful number, since it uses less digits than its factorization.

21302211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651105513.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21302211022 its reverse (22011220312), we get a palindrome (43313431334).

It can be divided in two parts, 21302 and 211022, that added together give a square (232324 = 482²).

The spelling of 21302211022 in words is "twenty-one billion, three hundred two million, two hundred eleven thousand, twenty-two".