1021012222194 has 96 divisors (see below), whose sum is σ = 2396253839616. Its totient is φ = 312965629440.

The previous prime is 1021012222193. The next prime is 1021012222271. The reversal of 1021012222194 is 4912222101201.

1021012222194 is a `hidden beast` number, since 10 + 210 + 1 + 222 + 219 + 4 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021012222193) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 8381764 + ... + 8502704.

It is an arithmetic number, because the mean of its divisors is an integer number (24960977496).

Almost surely, 2^{1021012222194} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021012222194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198126919808).

1021012222194 is an abundant number, since it is smaller than the sum of its proper divisors (1375241617422).

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

1021012222194 is a wasteful number, since it uses less digits than its factorization.

1021012222194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121600 (or 121597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 1021012222194 its reverse (4912222101201), we get a palindrome (5933234323395).

The spelling of 1021012222194 in words is "one trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred ninety-four".