630201021 has 8 divisors (see below), whose sum is σ = 841511904. Its totient is φ = 419512080.

The previous prime is 630200993. The next prime is 630201029. The reversal of 630201021 is 120102036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630201021 - 2¹⁸ = 629938877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630201029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153115 + ... + 157176.

It is an arithmetic number, because the mean of its divisors is an integer number (105188988).

Almost surely, 2^630201021 is an apocalyptic number.

It is an amenable number.

630201021 is a deficient number, since it is larger than the sum of its proper divisors (211310883).

630201021 is a wasteful number, since it uses less digits than its factorization.

630201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310971.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 630201021 is about 25103.8049108098. The cubic root of 630201021 is about 857.3530571818.

Adding to 630201021 its reverse (120102036), we get a palindrome (750303057).

The spelling of 630201021 in words is "six hundred thirty million, two hundred one thousand, twenty-one".