1085472994221 has 96 divisors (see below), whose sum is σ = 2037639352320. Its totient is φ = 540280540800.

The previous prime is 1085472994211. The next prime is 1085472994231. The reversal of 1085472994221 is 1224992745801.

1085472994221 is a `hidden beast` number, since 1 + 0 + 8 + 547 + 2 + 9 + 94 + 2 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1085472994211) and next prime (1085472994231).

It is not a de Polignac number, because 1085472994221 - 2⁷ = 1085472994093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085472994211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2426556 + ... + 2838858.

It is an arithmetic number, because the mean of its divisors is an integer number (21225409920).

Almost surely, 2^{1085472994221} is an apocalyptic number.

1085472994221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1085472994221 is a deficient number, since it is larger than the sum of its proper divisors (952166358099).

1085472994221 is a wasteful number, since it uses less digits than its factorization.

1085472994221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412487 (or 412484 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1085472994221 in words is "one trillion, eighty-five billion, four hundred seventy-two million, nine hundred ninety-four thousand, two hundred twenty-one".