212201011101186 has 24 divisors (see below), whose sum is σ = 461557841276844. Its totient is φ = 70458442076160.

The previous prime is 212201011101181. The next prime is 212201011101187. The reversal of 212201011101186 is 681101110102212.

It can be written as a sum of positive squares in 2 ways, for example, as 193438555751961 + 18762455349225 = 13908219^2 + 4331565^2 .

It is a super-2 number, since 2×212201011101186² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212201011101181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22935686155 + ... + 22935695406.

Almost surely, 2^{212201011101186} is an apocalyptic number.

212201011101186 is an abundant number, since it is smaller than the sum of its proper divisors (249356830175658).

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

212201011101186 is a wasteful number, since it uses less digits than its factorization.

212201011101186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45871381826 (or 45871381823 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 27.

Adding to 212201011101186 its reverse (681101110102212), we get a palindrome (893302121203398).

The spelling of 212201011101186 in words is "two hundred twelve trillion, two hundred one billion, eleven million, one hundred one thousand, one hundred eighty-six".