1001012102122 has 4 divisors (see below), whose sum is σ = 1501518153186. Its totient is φ = 500506051060.

The previous prime is 1001012102119. The next prime is 1001012102171. The reversal of 1001012102122 is 2212012101001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 820870428361 + 180141673761 = 906019^2 + 424431^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 250253025529 + ... + 250253025532.

Almost surely, 2^{1001012102122} is an apocalyptic number.

1001012102122 is a deficient number, since it is larger than the sum of its proper divisors (500506051064).

1001012102122 is an equidigital number, since it uses as much as digits as its factorization.

1001012102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500506051063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001012102122 its reverse (2212012101001), we get a palindrome (3213024203123).

The spelling of 1001012102122 in words is "one trillion, one billion, twelve million, one hundred two thousand, one hundred twenty-two".