212021123107 has 8 divisors (see below), whose sum is σ = 224887503600. Its totient is φ = 199198581504.

The previous prime is 212021123087. The next prime is 212021123183. The reversal of 212021123107 is 701321120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021123107 - 2⁷ = 212021122979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021123407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10949757 + ... + 10969102.

It is an arithmetic number, because the mean of its divisors is an integer number (28110937950).

Almost surely, 2^212021123107 is an apocalyptic number.

212021123107 is a deficient number, since it is larger than the sum of its proper divisors (12866380493).

212021123107 is a wasteful number, since it uses less digits than its factorization.

212021123107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21919445.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 212021123107 its reverse (701321120212), we get a palindrome (913342243319).

The spelling of 212021123107 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, one hundred seven".