21312131242022 has 8 divisors (see below), whose sum is σ = 31971479385000. Its totient is φ = 10654971447024.

The previous prime is 21312131241991. The next prime is 21312131242081. The reversal of 21312131242022 is 22024213121312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21312131241982 and 21312131242000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547062647 + ... + 547101602.

It is an arithmetic number, because the mean of its divisors is an integer number (3996434923125).

Almost surely, 2^{21312131242022} is an apocalyptic number.

21312131242022 is a deficient number, since it is larger than the sum of its proper divisors (10659348142978).

21312131242022 is a wasteful number, since it uses less digits than its factorization.

21312131242022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094173990.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21312131242022 its reverse (22024213121312), we get a palindrome (43336344363334).

The spelling of 21312131242022 in words is "twenty-one trillion, three hundred twelve billion, one hundred thirty-one million, two hundred forty-two thousand, twenty-two".