213203031012021 has 64 divisors (see below), whose sum is σ = 306696526709760. Its totient is φ = 131248459914240.

The previous prime is 213203031011951. The next prime is 213203031012061. The reversal of 213203031012021 is 120210130302312.

It is not a de Polignac number, because 213203031012021 - 2¹⁴ = 213203030995637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203031012061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4152174670 + ... + 4152226016.

It is an arithmetic number, because the mean of its divisors is an integer number (4792133229840).

Almost surely, 2^{213203031012021} is an apocalyptic number.

It is an amenable number.

213203031012021 is a deficient number, since it is larger than the sum of its proper divisors (93493495697739).

213203031012021 is a wasteful number, since it uses less digits than its factorization.

213203031012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54114.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213203031012021 its reverse (120210130302312), we get a palindrome (333413161314333).

The spelling of 213203031012021 in words is "two hundred thirteen trillion, two hundred three billion, thirty-one million, twelve thousand, twenty-one".