21101060260 has 96 divisors (see below), whose sum is σ = 51421934592. Its totient is φ = 7123645440.

The previous prime is 21101060237. The next prime is 21101060273. The reversal of 21101060260 is 6206010112.

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, 7898725 + ... + 7901395.

It is an arithmetic number, because the mean of its divisors is an integer number (535645152).

Almost surely, 2^21101060260 is an apocalyptic number.

21101060260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21101060260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25710967296).

21101060260 is an abundant number, since it is smaller than the sum of its proper divisors (30320874332).

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

21101060260 is a wasteful number, since it uses less digits than its factorization.

21101060260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533 (or 3531 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21101060260 its reverse (6206010112), we get a palindrome (27307070372).

The spelling of 21101060260 in words is "twenty-one billion, one hundred one million, sixty thousand, two hundred sixty".