1021112212194 has 64 divisors (see below), whose sum is σ = 2296465516800. Its totient is φ = 336286930176.

The previous prime is 1021112212157. The next prime is 1021112212271. The reversal of 1021112212194 is 4912122111201.

1021112212194 is a `hidden beast` number, since 10 + 211 + 1 + 221 + 219 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2196352 + ... + 2620340.

It is an arithmetic number, because the mean of its divisors is an integer number (35882273700).

Almost surely, 2^{1021112212194} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021112212194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148232758400).

1021112212194 is an abundant number, since it is smaller than the sum of its proper divisors (1275353304606).

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

1021112212194 is a wasteful number, since it uses less digits than its factorization.

1021112212194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424536 (or 424530 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 1021112212194 its reverse (4912122111201), we get a palindrome (5933234323395).

The spelling of 1021112212194 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twelve thousand, one hundred ninety-four".