12211019851 has 8 divisors (see below), whose sum is σ = 12476496384. Its totient is φ = 11945779560.

The previous prime is 12211019819. The next prime is 12211019857. The reversal of 12211019851 is 15891011221.

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 12211019851 - 2⁵ = 12211019819 is a prime.

It is a super-4 number, since 4×12211019851⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211019857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47506 + ... + 163336.

It is an arithmetic number, because the mean of its divisors is an integer number (1559562048).

Almost surely, 2^12211019851 is an apocalyptic number.

12211019851 is a deficient number, since it is larger than the sum of its proper divisors (265476533).

12211019851 is a wasteful number, since it uses less digits than its factorization.

12211019851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118121.

The product of its (nonzero) digits is 1440, while the sum is 31.

The spelling of 12211019851 in words is "twelve billion, two hundred eleven million, nineteen thousand, eight hundred fifty-one".