21341222140 has 24 divisors (see below), whose sum is σ = 51218933472. Its totient is φ = 7316990400.

The previous prime is 21341222117. The next prime is 21341222167. The reversal of 21341222140 is 4122214312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76218511 + ... + 76218790.

It is an arithmetic number, because the mean of its divisors is an integer number (2134122228).

Almost surely, 2^21341222140 is an apocalyptic number.

21341222140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21341222140 is an abundant number, since it is smaller than the sum of its proper divisors (29877711332).

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

21341222140 is a wasteful number, since it uses less digits than its factorization.

21341222140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152437317 (or 152437315 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21341222140 its reverse (4122214312), we get a palindrome (25463436452).

The spelling of 21341222140 in words is "twenty-one billion, three hundred forty-one million, two hundred twenty-two thousand, one hundred forty".