100020122001 has 20 divisors (see below), whose sum is σ = 149899498672. Its totient is φ = 66462865848.

The previous prime is 100020121963. The next prime is 100020122051. The reversal of 100020122001 is 100221020001.

It is not a de Polignac number, because 100020122001 - 2⁹ = 100020121489 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020122051) 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 19 ways as a sum of consecutive naturals, for example, 1986235 + ... + 2035968.

Almost surely, 2^100020122001 is an apocalyptic number.

It is an amenable number.

100020122001 is a deficient number, since it is larger than the sum of its proper divisors (49879376671).

100020122001 is an equidigital number, since it uses as much as digits as its factorization.

100020122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022522 (or 4022513 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100020122001 its reverse (100221020001), we get a palindrome (200241142002).

The spelling of 100020122001 in words is "one hundred billion, twenty million, one hundred twenty-two thousand, one".