212021100231 has 8 divisors (see below), whose sum is σ = 282711504240. Its totient is φ = 141339048192.

The previous prime is 212021100173. The next prime is 212021100253. The reversal of 212021100231 is 132001120212.

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

It is not a de Polignac number, because 212021100231 - 2⁷ = 212021100103 is a prime.

It is a super-2 number, since 2×212021100231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212021100231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021100271) 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, 2028516 + ... + 2130473.

It is an arithmetic number, because the mean of its divisors is an integer number (35338938030).

Almost surely, 2^212021100231 is an apocalyptic number.

212021100231 is a deficient number, since it is larger than the sum of its proper divisors (70690404009).

212021100231 is a wasteful number, since it uses less digits than its factorization.

212021100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175985.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212021100231 its reverse (132001120212), we get a palindrome (344022220443).

The spelling of 212021100231 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, two hundred thirty-one".