221244121302 has 16 divisors (see below), whose sum is σ = 454447384752. Its totient is φ = 71754850080.

The previous prime is 221244121297. The next prime is 221244121331. The reversal of 221244121302 is 203121442122.

It is a super-2 number, since 2×221244121302² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498297349 + ... + 498297792.

It is an arithmetic number, because the mean of its divisors is an integer number (28402961547).

Almost surely, 2^221244121302 is an apocalyptic number.

221244121302 is an abundant number, since it is smaller than the sum of its proper divisors (233203263450).

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

221244121302 is a wasteful number, since it uses less digits than its factorization.

221244121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996595183.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221244121302 its reverse (203121442122), we get a palindrome (424365563424).

The spelling of 221244121302 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred twenty-one thousand, three hundred two".