1415120135221 has 8 divisors (see below), whose sum is σ = 1530299083544. Its totient is φ = 1300844551680.

The previous prime is 1415120135179. The next prime is 1415120135257. The reversal of 1415120135221 is 1225310215141.

It can be written as a sum of positive squares in 4 ways, for example, as 400073960196 + 1015046175025 = 632514^2 + 1007495^2 .

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 1415120135221 - 2¹¹ = 1415120133173 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 1415120135221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415120135321) 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 7 ways as a sum of consecutive naturals, for example, 225837936 + ... + 225844201.

It is an arithmetic number, because the mean of its divisors is an integer number (191287385443).

Almost surely, 2^{1415120135221} is an apocalyptic number.

It is an amenable number.

1415120135221 is a deficient number, since it is larger than the sum of its proper divisors (115178948323).

1415120135221 is a wasteful number, since it uses less digits than its factorization.

1415120135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451682391.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 1415120135221 in words is "one trillion, four hundred fifteen billion, one hundred twenty million, one hundred thirty-five thousand, two hundred twenty-one".