100021142501 has 16 divisors (see below), whose sum is σ = 118702028928. Its totient is φ = 82495584000.

The previous prime is 100021142461. The next prime is 100021142563. The reversal of 100021142501 is 105241120001.

It is a cyclic number.

It is not a de Polignac number, because 100021142501 - 2¹⁸ = 100020880357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100021142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021142701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2366075 + ... + 2407976.

It is an arithmetic number, because the mean of its divisors is an integer number (7418876808).

Almost surely, 2^100021142501 is an apocalyptic number.

It is an amenable number.

100021142501 is a deficient number, since it is larger than the sum of its proper divisors (18680886427).

100021142501 is an equidigital number, since it uses as much as digits as its factorization.

100021142501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774172.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 100021142501 its reverse (105241120001), we get a palindrome (205262262502).

The spelling of 100021142501 in words is "one hundred billion, twenty-one million, one hundred forty-two thousand, five hundred one".