221340146802 has 32 divisors (see below), whose sum is σ = 449032987584. Its totient is φ = 72727704000.

The previous prime is 221340146647. The next prime is 221340146803. The reversal of 221340146802 is 208641043122.

221340146802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221340146803) 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 15 ways as a sum of consecutive naturals, for example, 666949 + ... + 942072.

It is an arithmetic number, because the mean of its divisors is an integer number (14032280862).

Almost surely, 2^221340146802 is an apocalyptic number.

221340146802 is an abundant number, since it is smaller than the sum of its proper divisors (227692840782).

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

221340146802 is a wasteful number, since it uses less digits than its factorization.

221340146802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609354.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 221340146802 its reverse (208641043122), we get a palindrome (429981189924).

The spelling of 221340146802 in words is "two hundred twenty-one billion, three hundred forty million, one hundred forty-six thousand, eight hundred two".