1000022111001 has 64 divisors (see below), whose sum is σ = 1562176627200. Its totient is φ = 631280901888.

The previous prime is 1000022110961. The next prime is 1000022111017. The reversal of 1000022111001 is 1001112200001.

It is a happy number.

It is not a de Polignac number, because 1000022111001 - 2⁶ = 1000022110937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000022111041) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 156323535 + ... + 156329931.

It is an arithmetic number, because the mean of its divisors is an integer number (24409009800).

Almost surely, 2^{1000022111001} is an apocalyptic number.

It is an amenable number.

1000022111001 is a deficient number, since it is larger than the sum of its proper divisors (562154516199).

1000022111001 is a wasteful number, since it uses less digits than its factorization.

1000022111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10255 (or 10249 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000022111001 its reverse (1001112200001), we get a palindrome (2001134311002).

The spelling of 1000022111001 in words is "one trillion, twenty-two million, one hundred eleven thousand, one".