212011001212021 has 16 divisors (see below), whose sum is σ = 244890188051328. Its totient is φ = 181399434969600.

The previous prime is 212011001212013. The next prime is 212011001212033. The reversal of 212011001212021 is 120212100110212.

It is a cyclic number.

It is not a de Polignac number, because 212011001212021 - 2³ = 212011001212013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011001211986 and 212011001212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011001212061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153088801 + ... + 154467481.

It is an arithmetic number, because the mean of its divisors is an integer number (15305636753208).

Almost surely, 2^{212011001212021} is an apocalyptic number.

It is an amenable number.

212011001212021 is a deficient number, since it is larger than the sum of its proper divisors (32879186839307).

212011001212021 is a wasteful number, since it uses less digits than its factorization.

212011001212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201052.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212011001212021 its reverse (120212100110212), we get a palindrome (332223101322233).

The spelling of 212011001212021 in words is "two hundred twelve trillion, eleven billion, one million, two hundred twelve thousand, twenty-one".