11818211012 has 12 divisors (see below), whose sum is σ = 20692889280. Its totient is φ = 5905956936.

The previous prime is 11818210997. The next prime is 11818211017. The reversal of 11818211012 is 21011281811.

It is a super-2 number, since 2×11818211012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11818211017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778688 + ... + 793719.

It is an arithmetic number, because the mean of its divisors is an integer number (1724407440).

Almost surely, 2^11818211012 is an apocalyptic number.

It is an amenable number.

11818211012 is a deficient number, since it is larger than the sum of its proper divisors (8874678268).

11818211012 is a wasteful number, since it uses less digits than its factorization.

11818211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574290 (or 1574288 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 26.

Adding to 11818211012 its reverse (21011281811), we get a palindrome (32829492823).

The spelling of 11818211012 in words is "eleven billion, eight hundred eighteen million, two hundred eleven thousand, twelve".