221202321340 has 96 divisors (see below), whose sum is σ = 623697790464. Its totient is φ = 63642620160.

The previous prime is 221202321323. The next prime is 221202321397. The reversal of 221202321340 is 43123202122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5504514 + ... + 5544553.

It is an arithmetic number, because the mean of its divisors is an integer number (6496851984).

Almost surely, 2^221202321340 is an apocalyptic number.

221202321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221202321340 is an abundant number, since it is smaller than the sum of its proper divisors (402495469124).

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

221202321340 is a wasteful number, since it uses less digits than its factorization.

221202321340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049107 (or 11049105 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221202321340 its reverse (43123202122), we get a palindrome (264325523462).

The spelling of 221202321340 in words is "two hundred twenty-one billion, two hundred two million, three hundred twenty-one thousand, three hundred forty".