221340152125045 has 16 divisors (see below), whose sum is σ = 268624293496560. Its totient is φ = 175061851430400.

The previous prime is 221340152125007. The next prime is 221340152125063. The reversal of 221340152125045 is 540521251043122.

It can be written as a sum of positive squares in 8 ways, for example, as 24312384316081 + 197027767808964 = 4930759^2 + 14036658^2 .

It is a de Polignac number, because none of the positive numbers 2^k-221340152125045 is a prime.

It is a super-3 number, since 3×221340152125045³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221340152124995 and 221340152125013.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25628166 + ... + 33158455.

It is an arithmetic number, because the mean of its divisors is an integer number (16789018343535).

Almost surely, 2^{221340152125045} is an apocalyptic number.

It is an amenable number.

221340152125045 is a deficient number, since it is larger than the sum of its proper divisors (47284141371515).

221340152125045 is an equidigital number, since it uses as much as digits as its factorization.

221340152125045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58795176.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 221340152125045 in words is "two hundred twenty-one trillion, three hundred forty billion, one hundred fifty-two million, one hundred twenty-five thousand, forty-five".