221506661626014 has 16 divisors (see below), whose sum is σ = 445574093908752. Its totient is φ = 73408758765888.

The previous prime is 221506661626013. The next prime is 221506661626099. The reversal of 221506661626014 is 410626166605122.

It is a happy number.

221506661626014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221506661626014² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221506661626013) 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, 106698776239 + ... + 106698778314.

It is an arithmetic number, because the mean of its divisors is an integer number (27848380869297).

Almost surely, 2^{221506661626014} is an apocalyptic number.

221506661626014 is an abundant number, since it is smaller than the sum of its proper divisors (224067432282738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221506661626014 is a wasteful number, since it uses less digits than its factorization.

221506661626014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213397554731.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 221506661626014 in words is "two hundred twenty-one trillion, five hundred six billion, six hundred sixty-one million, six hundred twenty-six thousand, fourteen".