213263246021 has 16 divisors (see below), whose sum is σ = 245323567104. Its totient is φ = 181605255984.

The previous prime is 213263246003. The next prime is 213263246029. The reversal of 213263246021 is 120642362312.

It is a cyclic number.

It is not a de Polignac number, because 213263246021 - 2¹⁸ = 213262983877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213263246029) 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, 517826 + ... + 833468.

It is an arithmetic number, because the mean of its divisors is an integer number (15332722944).

Almost surely, 2^213263246021 is an apocalyptic number.

It is an amenable number.

213263246021 is a deficient number, since it is larger than the sum of its proper divisors (32060321083).

213263246021 is a wasteful number, since it uses less digits than its factorization.

213263246021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316280.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 213263246021 in words is "two hundred thirteen billion, two hundred sixty-three million, two hundred forty-six thousand, twenty-one".