31221020130322 has 16 divisors (see below), whose sum is σ = 51092033493600. Its totient is φ = 14190514047040.

The previous prime is 31221020130299. The next prime is 31221020130331. The reversal of 31221020130322 is 22303102012213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31221020130293 and 31221020130302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42565072 + ... + 43292347.

It is an arithmetic number, because the mean of its divisors is an integer number (3193252093350).

Almost surely, 2^{31221020130322} is an apocalyptic number.

31221020130322 is a deficient number, since it is larger than the sum of its proper divisors (19871013363278).

31221020130322 is a wasteful number, since it uses less digits than its factorization.

31221020130322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85873961.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31221020130322 its reverse (22303102012213), we get a palindrome (53524122142535).

The spelling of 31221020130322 in words is "thirty-one trillion, two hundred twenty-one billion, twenty million, one hundred thirty thousand, three hundred twenty-two".