100215121525331 has 4 divisors (see below), whose sum is σ = 100420902062832. Its totient is φ = 100009340987832.

The previous prime is 100215121525313. The next prime is 100215121525361. The reversal of 100215121525331 is 133525121512001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100215121525331 is a prime.

It is a super-2 number, since 2×100215121525331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100215121525361) 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, 102890268020 + ... + 102890268993.

It is an arithmetic number, because the mean of its divisors is an integer number (25105225515708).

Almost surely, 2^{100215121525331} is an apocalyptic number.

100215121525331 is a deficient number, since it is larger than the sum of its proper divisors (205780537501).

100215121525331 is an equidigital number, since it uses as much as digits as its factorization.

100215121525331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205780537500.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 100215121525331 in words is "one hundred trillion, two hundred fifteen billion, one hundred twenty-one million, five hundred twenty-five thousand, three hundred thirty-one".