11212120015 has 8 divisors (see below), whose sum is σ = 13740811200. Its totient is φ = 8778851232.

The previous prime is 11212119979. The next prime is 11212120033. The reversal of 11212120015 is 51002121211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212120015 - 2¹⁷ = 11211988943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23855340 + ... + 23855809.

It is an arithmetic number, because the mean of its divisors is an integer number (1717601400).

Almost surely, 2^11212120015 is an apocalyptic number.

11212120015 is a deficient number, since it is larger than the sum of its proper divisors (2528691185).

11212120015 is an equidigital number, since it uses as much as digits as its factorization.

11212120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711201.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 11212120015 its reverse (51002121211), we get a palindrome (62214241226).

The spelling of 11212120015 in words is "eleven billion, two hundred twelve million, one hundred twenty thousand, fifteen".