100021010120015 has 8 divisors (see below), whose sum is σ = 120026469012720. Its totient is φ = 80015970183552.

The previous prime is 100021010119967. The next prime is 100021010120029. The reversal of 100021010120015 is 510021010120001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100021010120015 - 2¹⁸ = 100021009857871 is a prime.

It is a super-5 number, since 5×100021010120015⁵ (a number of 71 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104213594 + ... + 105168983.

It is an arithmetic number, because the mean of its divisors is an integer number (15003308626590).

Almost surely, 2^{100021010120015} is an apocalyptic number.

100021010120015 is a deficient number, since it is larger than the sum of its proper divisors (20005458892705).

100021010120015 is an equidigital number, since it uses as much as digits as its factorization.

100021010120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209478121.

The product of its (nonzero) digits is 20, while the sum is 14.

Subtracting from 100021010120015 its sum of digits (14), we obtain a palindrome (100021010120001).

Adding to 100021010120015 its reverse (510021010120001), we get a palindrome (610042020240016).

The spelling of 100021010120015 in words is "one hundred trillion, twenty-one billion, ten million, one hundred twenty thousand, fifteen".