11721217010 has 32 divisors (see below), whose sum is σ = 21162090240. Its totient is φ = 4674313728.

The previous prime is 11721216943. The next prime is 11721217031. The reversal of 11721217010 is 1071212711.

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, 7422401 + ... + 7423979.

It is an arithmetic number, because the mean of its divisors is an integer number (661315320).

Almost surely, 2^11721217010 is an apocalyptic number.

11721217010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11721217010 is a deficient number, since it is larger than the sum of its proper divisors (9440873230).

11721217010 is a wasteful number, since it uses less digits than its factorization.

11721217010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its (nonzero) digits is 196, while the sum is 23.

Adding to 11721217010 its reverse (1071212711), we get a palindrome (12792429721).

The spelling of 11721217010 in words is "eleven billion, seven hundred twenty-one million, two hundred seventeen thousand, ten".