21302131012222 has 4 divisors (see below), whose sum is σ = 31953196518336. Its totient is φ = 10651065506110.

The previous prime is 21302131012199. The next prime is 21302131012249. The reversal of 21302131012222 is 22221013120312.

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 = 21302131012193 and 21302131012202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325532753054 + ... + 5325532753057.

It is an arithmetic number, because the mean of its divisors is an integer number (7988299129584).

Almost surely, 2^{21302131012222} is an apocalyptic number.

21302131012222 is a deficient number, since it is larger than the sum of its proper divisors (10651065506114).

21302131012222 is a wasteful number, since it uses less digits than its factorization.

21302131012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651065506113.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21302131012222 its reverse (22221013120312), we get a palindrome (43523144132534).

The spelling of 21302131012222 in words is "twenty-one trillion, three hundred two billion, one hundred thirty-one million, twelve thousand, two hundred twenty-two".