212311200003021 has 24 divisors (see below), whose sum is σ = 350489152338624. Its totient is φ = 121318203314880.

The previous prime is 212311200002987. The next prime is 212311200003031. The reversal of 212311200003021 is 120300002113212.

212311200003021 is a `hidden beast` number, since 212 + 31 + 120 + 0 + 0 + 0 + 302 + 1 = 666.

It is not a de Polignac number, because 212311200003021 - 2¹⁵ = 212311199970253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212311200002985 and 212311200003003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311200003031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31372200 + ... + 37534481.

It is an arithmetic number, because the mean of its divisors is an integer number (14603714680776).

Almost surely, 2^{212311200003021} is an apocalyptic number.

212311200003021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212311200003021 is a deficient number, since it is larger than the sum of its proper divisors (138177952335603).

212311200003021 is a wasteful number, since it uses less digits than its factorization.

212311200003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68955601 (or 68955598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212311200003021 its reverse (120300002113212), we get a palindrome (332611202116233).

The spelling of 212311200003021 in words is "two hundred twelve trillion, three hundred eleven billion, two hundred million, three thousand, twenty-one".