221023312031302 has 16 divisors (see below), whose sum is σ = 361939086001152. Its totient is φ = 100391648664520.

The previous prime is 221023312031287. The next prime is 221023312031377. The reversal of 221023312031302 is 203130213320122.

It is a super-2 number, since 2×221023312031302² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674627638 + ... + 3674687785.

It is an arithmetic number, because the mean of its divisors is an integer number (22621192875072).

Almost surely, 2^{221023312031302} is an apocalyptic number.

221023312031302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221023312031302 is a deficient number, since it is larger than the sum of its proper divisors (140915773969850).

221023312031302 is a wasteful number, since it uses less digits than its factorization.

221023312031302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7349316803.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 221023312031302 its reverse (203130213320122), we get a palindrome (424153525351424).

The spelling of 221023312031302 in words is "two hundred twenty-one trillion, twenty-three billion, three hundred twelve million, thirty-one thousand, three hundred two".