820222103312 has 10 divisors (see below), whose sum is σ = 1589180325198. Its totient is φ = 410111051648.

The previous prime is 820222103291. The next prime is 820222103339. The reversal of 820222103312 is 213301222028.

It can be written as a sum of positive squares in only one way, i.e., 566202071296 + 254020032016 = 752464^2 + 504004^2 .

It is a super-2 number, since 2×820222103312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25631940713 + ... + 25631940744.

Almost surely, 2^820222103312 is an apocalyptic number.

It is an amenable number.

820222103312 is a deficient number, since it is larger than the sum of its proper divisors (768958221886).

820222103312 is a wasteful number, since it uses less digits than its factorization.

820222103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51263881465 (or 51263881459 counting only the distinct ones).

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

The spelling of 820222103312 in words is "eight hundred twenty billion, two hundred twenty-two million, one hundred three thousand, three hundred twelve".