102001022001 has 12 divisors (see below), whose sum is σ = 147340028160. Its totient is φ = 67998272760.

The previous prime is 102001021973. The next prime is 102001022029. The reversal of 102001022001 is 100220100201.

It is an interprime number because it is at equal distance from previous prime (102001021973) and next prime (102001022029).

It is not a de Polignac number, because 102001022001 - 2⁷ = 102001021873 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 (102001022401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89596 + ... + 460466.

It is an arithmetic number, because the mean of its divisors is an integer number (12278335680).

Almost surely, 2^102001022001 is an apocalyptic number.

It is an amenable number.

102001022001 is a deficient number, since it is larger than the sum of its proper divisors (45339006159).

102001022001 is a wasteful number, since it uses less digits than its factorization.

102001022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401436 (or 401433 counting only the distinct ones).

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

Adding to 102001022001 its reverse (100220100201), we get a palindrome (202221122202).

The spelling of 102001022001 in words is "one hundred two billion, one million, twenty-two thousand, one".