81033222222222 has 32 divisors (see below), whose sum is σ = 165381906517920. Its totient is φ = 26460087214080.

The previous prime is 81033222222209. The next prime is 81033222222301. The reversal of 81033222222222 is 22222222233018.

81033222222222 is a modest number, since divided by 22222222 gives 810332 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198564847 + ... + 198972522.

It is an arithmetic number, because the mean of its divisors is an integer number (5168184578685).

Almost surely, 2^{81033222222222} is an apocalyptic number.

81033222222222 is an abundant number, since it is smaller than the sum of its proper divisors (84348684295698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81033222222222 is a wasteful number, since it uses less digits than its factorization.

81033222222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397538068.

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 81033222222222 in words is "eighty-one trillion, thirty-three billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".