1000122002001 has 24 divisors (see below), whose sum is σ = 1488716820864. Its totient is φ = 646590690240.

The previous prime is 1000122001997. The next prime is 1000122002041. The reversal of 1000122002001 is 1002002210001.

It is not a de Polignac number, because 1000122002001 - 2² = 1000122001997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1000122002041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8053221 + ... + 8176466.

It is an arithmetic number, because the mean of its divisors is an integer number (62029867536).

Almost surely, 2^{1000122002001} is an apocalyptic number.

It is an amenable number.

1000122002001 is a deficient number, since it is larger than the sum of its proper divisors (488594818863).

1000122002001 is a wasteful number, since it uses less digits than its factorization.

1000122002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16229901 (or 16229898 counting only the distinct ones).

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

Adding to 1000122002001 its reverse (1002002210001), we get a palindrome (2002124212002).

The spelling of 1000122002001 in words is "one trillion, one hundred twenty-two million, two thousand, one".