213002001 has 16 divisors (see below), whose sum is σ = 316742400. Its totient is φ = 141468624.

The previous prime is 213001991. The next prime is 213002021. The reversal of 213002001 is 100200312.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-213002001 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 (213002021) 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, 7401 + ... + 21926.

It is an arithmetic number, because the mean of its divisors is an integer number (19796400).

Almost surely, 2^213002001 is an apocalyptic number.

It is an amenable number.

213002001 is a deficient number, since it is larger than the sum of its proper divisors (103740399).

213002001 is a wasteful number, since it uses less digits than its factorization.

213002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29605 (or 29599 counting only the distinct ones).

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

The square root of 213002001 is about 14594.5880722958. The cubic root of 213002001 is about 597.2111321110.

Adding to 213002001 its reverse (100200312), we get a palindrome (313202313).

The spelling of 213002001 in words is "two hundred thirteen million, two thousand, one".