213204122021011 has 16 divisors (see below), whose sum is σ = 232612683545088. Its totient is φ = 193799956903200.

The previous prime is 213204122020963. The next prime is 213204122021039. The reversal of 213204122021011 is 110120221402312.

It is a cyclic number.

It is not a de Polignac number, because 213204122021011 - 2¹¹ = 213204122018963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213204122021041) 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, 6247356630 + ... + 6247390756.

It is an arithmetic number, because the mean of its divisors is an integer number (14538292721568).

Almost surely, 2^{213204122021011} is an apocalyptic number.

213204122021011 is a deficient number, since it is larger than the sum of its proper divisors (19408561524077).

213204122021011 is a wasteful number, since it uses less digits than its factorization.

213204122021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81882.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 213204122021011 its reverse (110120221402312), we get a palindrome (323324343423323).

The spelling of 213204122021011 in words is "two hundred thirteen trillion, two hundred four billion, one hundred twenty-two million, twenty-one thousand, eleven".