212200320040021 has 16 divisors (see below), whose sum is σ = 212785316565120. Its totient is φ = 211615828482240.

The previous prime is 212200320040019. The next prime is 212200320040031. The reversal of 212200320040021 is 120040023002212.

It is a cyclic number.

It is not a de Polignac number, because 212200320040021 - 2¹ = 212200320040019 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 (212200320040031) 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, 10215188191 + ... + 10215208963.

It is an arithmetic number, because the mean of its divisors is an integer number (13299082285320).

Almost surely, 2^{212200320040021} is an apocalyptic number.

It is an amenable number.

212200320040021 is a deficient number, since it is larger than the sum of its proper divisors (584996525099).

212200320040021 is a wasteful number, since it uses less digits than its factorization.

212200320040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31596.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212200320040021 its reverse (120040023002212), we get a palindrome (332240343042233).

The spelling of 212200320040021 in words is "two hundred twelve trillion, two hundred billion, three hundred twenty million, forty thousand, twenty-one".