212011112012021 has 8 divisors (see below), whose sum is σ = 242948007333504. Its totient is φ = 181236615091920.

The previous prime is 212011112012009. The next prime is 212011112012047. The reversal of 212011112012021 is 120210211110212.

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 212011112012021 - 2²⁶ = 212011044903157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011112012221) 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, 40599597545 + ... + 40599602766.

It is an arithmetic number, because the mean of its divisors is an integer number (30368500916688).

Almost surely, 2^{212011112012021} is an apocalyptic number.

It is an amenable number.

212011112012021 is a deficient number, since it is larger than the sum of its proper divisors (30936895321483).

212011112012021 is an equidigital number, since it uses as much as digits as its factorization.

212011112012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81199200691.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212011112012021 its reverse (120210211110212), we get a palindrome (332221323122233).

The spelling of 212011112012021 in words is "two hundred twelve trillion, eleven billion, one hundred twelve million, twelve thousand, twenty-one".