12011012210 has 32 divisors (see below), whose sum is σ = 22899224880. Its totient is φ = 4520282112.

The previous prime is 12011012171. The next prime is 12011012231. The reversal of 12011012210 is 1221011021.

It can be written as a sum of positive squares in 8 ways, for example, as 7906944241 + 4104067969 = 88921^2 + 64063^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011012191 and 12011012200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587846 + ... + 607934.

Almost surely, 2^12011012210 is an apocalyptic number.

12011012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011012210 is a deficient number, since it is larger than the sum of its proper divisors (10888212670).

12011012210 is a wasteful number, since it uses less digits than its factorization.

12011012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23630.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12011012210 its reverse (1221011021), we get a palindrome (13232023231).

The spelling of 12011012210 in words is "twelve billion, eleven million, twelve thousand, two hundred ten".