221222402140 has 48 divisors (see below), whose sum is σ = 474546167424. Its totient is φ = 86588928000.

The previous prime is 221222402087. The next prime is 221222402183. The reversal of 221222402140 is 41204222122.

221222402140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 5338300 + ... + 5379580.

It is an arithmetic number, because the mean of its divisors is an integer number (9886378488).

Almost surely, 2^221222402140 is an apocalyptic number.

221222402140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222402140 is an abundant number, since it is smaller than the sum of its proper divisors (253323765284).

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

221222402140 is a wasteful number, since it uses less digits than its factorization.

221222402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47038 (or 47036 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221222402140 its reverse (41204222122), we get a palindrome (262426624262).

The spelling of 221222402140 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred two thousand, one hundred forty".