21312222032302 has 8 divisors (see below), whose sum is σ = 31968377708616. Its totient is φ = 10656096129432.

The previous prime is 21312222032291. The next prime is 21312222032323. The reversal of 21312222032302 is 20323022221312.

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

It is a super-2 number, since 2×21312222032302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558353 + ... + 8574364.

It is an arithmetic number, because the mean of its divisors is an integer number (3996047213577).

Almost surely, 2^{21312222032302} is an apocalyptic number.

21312222032302 is a deficient number, since it is larger than the sum of its proper divisors (10656155676314).

21312222032302 is a wasteful number, since it uses less digits than its factorization.

21312222032302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14886722.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21312222032302 its reverse (20323022221312), we get a palindrome (41635244253614).

The spelling of 21312222032302 in words is "twenty-one trillion, three hundred twelve billion, two hundred twenty-two million, thirty-two thousand, three hundred two".