21322241661260 has 24 divisors (see below), whose sum is σ = 45044831492640. Its totient is φ = 8477825425664.

The previous prime is 21322241661241. The next prime is 21322241661263. The reversal of 21322241661260 is 6216614222312.

21322241661260 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21322241661260² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21322241661263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191949005 + ... + 3191955684.

It is an arithmetic number, because the mean of its divisors is an integer number (1876867978860).

Almost surely, 2^{21322241661260} is an apocalyptic number.

21322241661260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322241661260 is an abundant number, since it is smaller than the sum of its proper divisors (23722589831380).

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

21322241661260 is a wasteful number, since it uses less digits than its factorization.

21322241661260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383904865 (or 6383904863 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

Adding to 21322241661260 its reverse (6216614222312), we get a palindrome (27538855883572).

The spelling of 21322241661260 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred forty-one million, six hundred sixty-one thousand, two hundred sixty".