211612880196 has 81 divisors (see below), whose sum is σ = 547946725599. Its totient is φ = 68858575632.

The previous prime is 211612880191. The next prime is 211612880231. The reversal of 211612880196 is 691088216112.

It is a happy number.

The square root of 211612880196 is 460014.

It is a perfect power (a square), and thus also a powerful number.

211612880196 is a `hidden beast` number, since 2 + 11 + 612 + 8 + 8 + 0 + 19 + 6 = 666.

It is a super-2 number, since 2×211612880196² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211612880191) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 118682721 + ... + 118684503.

Almost surely, 2^211612880196 is an apocalyptic number.

211612880196 is the 460014-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211612880196

211612880196 is an abundant number, since it is smaller than the sum of its proper divisors (336333845403).

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

211612880196 is an equidigital number, since it uses as much as digits as its factorization.

211612880196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

It can be divided in two parts, 2116128 and 80196, that added together give a square (2196324 = 1482²).

The spelling of 211612880196 in words is "two hundred eleven billion, six hundred twelve million, eight hundred eighty thousand, one hundred ninety-six".