102021120100001 has 4 divisors (see below), whose sum is σ = 102033932002992. Its totient is φ = 102008308197012.

The previous prime is 102021120099961. The next prime is 102021120100007. The reversal of 102021120100001 is 100001021120201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102021120100001 - 2²² = 102021115905697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021120100007) 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 3 ways as a sum of consecutive naturals, for example, 6405939551 + ... + 6405955476.

It is an arithmetic number, because the mean of its divisors is an integer number (25508483000748).

Almost surely, 2^{102021120100001} is an apocalyptic number.

It is an amenable number.

102021120100001 is a deficient number, since it is larger than the sum of its proper divisors (12811902991).

102021120100001 is an equidigital number, since it uses as much as digits as its factorization.

102021120100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811902990.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102021120100001 its reverse (100001021120201), we get a palindrome (202022141220202).

The spelling of 102021120100001 in words is "one hundred two trillion, twenty-one billion, one hundred twenty million, one hundred thousand, one".