221810147145133 has 8 divisors (see below), whose sum is σ = 221831005138200. Its totient is φ = 221789289867840.

The previous prime is 221810147145113. The next prime is 221810147145253. The reversal of 221810147145133 is 331541741018122.

It can be written as a sum of positive squares in 4 ways, for example, as 15007426619364 + 206802720525769 = 3873942^2 + 14380637^2 .

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 221810147145133 - 2²⁵ = 221810113590701 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 221810147145133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221810147145113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769546303 + ... + 769834483.

It is an arithmetic number, because the mean of its divisors is an integer number (27728875642275).

Almost surely, 2^{221810147145133} is an apocalyptic number.

It is an amenable number.

221810147145133 is a deficient number, since it is larger than the sum of its proper divisors (20857993067).

221810147145133 is a wasteful number, since it uses less digits than its factorization.

221810147145133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357887.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 221810147145133 in words is "two hundred twenty-one trillion, eight hundred ten billion, one hundred forty-seven million, one hundred forty-five thousand, one hundred thirty-three".