213203033121 has 24 divisors (see below), whose sum is σ = 307884066336. Its totient is φ = 131174459520.

The previous prime is 213203033059. The next prime is 213203033159. The reversal of 213203033121 is 121330302312.

It is not a de Polignac number, because 213203033121 - 2³¹ = 211055549473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213203033321) 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, 2534686 + ... + 2617448.

It is an arithmetic number, because the mean of its divisors is an integer number (12828502764).

Almost surely, 2^213203033121 is an apocalyptic number.

It is an amenable number.

213203033121 is a deficient number, since it is larger than the sum of its proper divisors (94681033215).

213203033121 is a wasteful number, since it uses less digits than its factorization.

213203033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87873 (or 87860 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213203033121 its reverse (121330302312), we get a palindrome (334533335433).

The spelling of 213203033121 in words is "two hundred thirteen billion, two hundred three million, thirty-three thousand, one hundred twenty-one".