1021303688166 has 24 divisors (see below), whose sum is σ = 2264285697960. Its totient is φ = 332517479616.

The previous prime is 1021303688147. The next prime is 1021303688191. The reversal of 1021303688166 is 6618863031201.

1021303688166 is a `hidden beast` number, since 10 + 213 + 0 + 368 + 8 + 1 + 66 = 666.

It is a super-2 number, since 2×1021303688166² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659756131 + ... + 659757678.

It is an arithmetic number, because the mean of its divisors is an integer number (94345237415).

Almost surely, 2^{1021303688166} is an apocalyptic number.

1021303688166 is an abundant number, since it is smaller than the sum of its proper divisors (1242982009794).

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

1021303688166 is a wasteful number, since it uses less digits than its factorization.

1021303688166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319513860 (or 1319513857 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1021303688166 in words is "one trillion, twenty-one billion, three hundred three million, six hundred eighty-eight thousand, one hundred sixty-six".