11121602261 has 8 divisors (see below), whose sum is σ = 13865893824. Its totient is φ = 8666183520.

The previous prime is 11121602257. The next prime is 11121602279. The reversal of 11121602261 is 16220612111.

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 11121602261 - 2² = 11121602257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121662261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72218120 + ... + 72218273.

It is an arithmetic number, because the mean of its divisors is an integer number (1733236728).

Almost surely, 2^11121602261 is an apocalyptic number.

11121602261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11121602261 is a deficient number, since it is larger than the sum of its proper divisors (2744291563).

11121602261 is a wasteful number, since it uses less digits than its factorization.

11121602261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144436411.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11121602261 in words is "eleven billion, one hundred twenty-one million, six hundred two thousand, two hundred sixty-one".