213000020001 has 12 divisors (see below), whose sum is σ = 307740725760. Its totient is φ = 141965845560.

The previous prime is 213000019987. The next prime is 213000020053. The reversal of 213000020001 is 100020000312.

It is a happy number.

It is not a de Polignac number, because 213000020001 - 2⁶ = 213000019937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (213000000001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2807805 + ... + 2882666.

It is an arithmetic number, because the mean of its divisors is an integer number (25645060480).

Almost surely, 2^213000020001 is an apocalyptic number.

It is an amenable number.

213000020001 is a deficient number, since it is larger than the sum of its proper divisors (94740705759).

213000020001 is a wasteful number, since it uses less digits than its factorization.

213000020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694636 (or 5694633 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 213000020001 its reverse (100020000312), we get a palindrome (313020020313).

The spelling of 213000020001 in words is "two hundred thirteen billion, twenty thousand, one".