212060121686 has 8 divisors (see below), whose sum is σ = 363531637200. Its totient is φ = 90882909288.

The previous prime is 212060121671. The next prime is 212060121751. The reversal of 212060121686 is 686121060212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212060121686² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7573575761 + ... + 7573575788.

It is an arithmetic number, because the mean of its divisors is an integer number (45441454650).

Almost surely, 2^212060121686 is an apocalyptic number.

212060121686 is a deficient number, since it is larger than the sum of its proper divisors (151471515514).

212060121686 is a wasteful number, since it uses less digits than its factorization.

212060121686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15147151558.

The product of its (nonzero) digits is 13824, while the sum is 35.

Adding to 212060121686 its reverse (686121060212), we get a palindrome (898181181898).

The spelling of 212060121686 in words is "two hundred twelve billion, sixty million, one hundred twenty-one thousand, six hundred eighty-six".