402201221243 has 4 divisors (see below), whose sum is σ = 407866027248. Its totient is φ = 396536415240.

The previous prime is 402201221207. The next prime is 402201221281. The reversal of 402201221243 is 342122102204.

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

It is a cyclic number.

It is not a de Polignac number, because 402201221243 - 2⁶ = 402201221179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402201221293) 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, 2832402896 + ... + 2832403037.

It is an arithmetic number, because the mean of its divisors is an integer number (101966506812).

Almost surely, 2^402201221243 is an apocalyptic number.

402201221243 is a deficient number, since it is larger than the sum of its proper divisors (5664806005).

402201221243 is an equidigital number, since it uses as much as digits as its factorization.

402201221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664806004.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402201221243 its reverse (342122102204), we get a palindrome (744323323447).

The spelling of 402201221243 in words is "four hundred two billion, two hundred one million, two hundred twenty-one thousand, two hundred forty-three".