11702221812 has 36 divisors (see below), whose sum is σ = 29867816160. Its totient is φ = 3862868112.

The previous prime is 11702221801. The next prime is 11702221823. The reversal of 11702221812 is 21812220711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11702221801) and next prime (11702221823).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1574262 + ... + 1581677.

It is an arithmetic number, because the mean of its divisors is an integer number (829661560).

Almost surely, 2^11702221812 is an apocalyptic number.

11702221812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11702221812 is an abundant number, since it is smaller than the sum of its proper divisors (18165594348).

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

11702221812 is a wasteful number, since it uses less digits than its factorization.

11702221812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156052 (or 3156047 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The spelling of 11702221812 in words is "eleven billion, seven hundred two million, two hundred twenty-one thousand, eight hundred twelve".