201224023001 has 4 divisors (see below), whose sum is σ = 201229600692. Its totient is φ = 201218445312.

The previous prime is 201224022997. The next prime is 201224023019. The reversal of 201224023001 is 100320422102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85511795776 + 115712227225 = 292424^2 + 340165^2 .

It is a cyclic number.

It is not a de Polignac number, because 201224023001 - 2² = 201224022997 is a prime.

It is a super-2 number, since 2×201224023001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201224023081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734376 + ... + 2807001.

It is an arithmetic number, because the mean of its divisors is an integer number (50307400173).

Almost surely, 2^201224023001 is an apocalyptic number.

It is an amenable number.

201224023001 is a deficient number, since it is larger than the sum of its proper divisors (5577691).

201224023001 is an equidigital number, since it uses as much as digits as its factorization.

201224023001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577690.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201224023001 its reverse (100320422102), we get a palindrome (301544445103).

The spelling of 201224023001 in words is "two hundred one billion, two hundred twenty-four million, twenty-three thousand, one".