215044145101 has 4 divisors (see below), whose sum is σ = 215045211712. Its totient is φ = 215043078492.

The previous prime is 215044145039. The next prime is 215044145123. The reversal of 215044145101 is 101541440512.

215044145101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 215044145101 - 2¹⁵ = 215044112333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215044145101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215044145131) 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 3 ways as a sum of consecutive naturals, for example, 128421 + ... + 668266.

It is an arithmetic number, because the mean of its divisors is an integer number (53761302928).

Almost surely, 2^215044145101 is an apocalyptic number.

It is an amenable number.

215044145101 is a deficient number, since it is larger than the sum of its proper divisors (1066611).

215044145101 is an equidigital number, since it uses as much as digits as its factorization.

215044145101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066610.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 215044145101 its reverse (101541440512), we get a palindrome (316585585613).

The spelling of 215044145101 in words is "two hundred fifteen billion, forty-four million, one hundred forty-five thousand, one hundred one".