213533533012 has 6 divisors (see below), whose sum is σ = 373683682778. Its totient is φ = 106766766504.

The previous prime is 213533533007. The next prime is 213533533063. The reversal of 213533533012 is 210335335312.

It can be written as a sum of positive squares in only one way, i.e., 197859494596 + 15674038416 = 444814^2 + 125196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26691691623 + ... + 26691691630.

Almost surely, 2^213533533012 is an apocalyptic number.

It is an amenable number.

213533533012 is a deficient number, since it is larger than the sum of its proper divisors (160150149766).

213533533012 is a wasteful number, since it uses less digits than its factorization.

213533533012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53383383257 (or 53383383255 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 213533533012 its reverse (210335335312), we get a palindrome (423868868324).

The spelling of 213533533012 in words is "two hundred thirteen billion, five hundred thirty-three million, five hundred thirty-three thousand, twelve".