100021210010001 has 48 divisors (see below), whose sum is σ = 170076042933888. Its totient is φ = 55452881491200.

The previous prime is 100021210009937. The next prime is 100021210010003. The reversal of 100021210010001 is 100010012120001.

It is a happy number.

It is not a de Polignac number, because 100021210010001 - 2⁶ = 100021210009937 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 (100021210010003) 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 47 ways as a sum of consecutive naturals, for example, 106501771 + ... + 107436816.

It is an arithmetic number, because the mean of its divisors is an integer number (3543250894456).

Almost surely, 2^{100021210010001} is an apocalyptic number.

It is an amenable number.

100021210010001 is a deficient number, since it is larger than the sum of its proper divisors (70054832923887).

100021210010001 is a wasteful number, since it uses less digits than its factorization.

100021210010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213938822 (or 213938819 counting only the distinct ones).

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

Adding to 100021210010001 its reverse (100010012120001), we get a palindrome (200031222130002).

The spelling of 100021210010001 in words is "one hundred trillion, twenty-one billion, two hundred ten million, ten thousand, one".