23002021221 has 8 divisors (see below), whose sum is σ = 30685708704. Its totient is φ = 15326507280.

The previous prime is 23002021219. The next prime is 23002021267. The reversal of 23002021221 is 12212020032.

It is a happy number.

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

It is not a de Polignac number, because 23002021221 - 2¹ = 23002021219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23002021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23002001221) 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, 2036815 + ... + 2048076.

It is an arithmetic number, because the mean of its divisors is an integer number (3835713588).

Almost surely, 2^23002021221 is an apocalyptic number.

It is an amenable number.

23002021221 is a deficient number, since it is larger than the sum of its proper divisors (7683687483).

23002021221 is a wasteful number, since it uses less digits than its factorization.

23002021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086771.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23002021221 its reverse (12212020032), we get a palindrome (35214041253).

The spelling of 23002021221 in words is "twenty-three billion, two million, twenty-one thousand, two hundred twenty-one".