402221311001 has 4 divisors (see below), whose sum is σ = 419709194112. Its totient is φ = 384733427892.

The previous prime is 402221310979. The next prime is 402221311003. The reversal of 402221311001 is 100113122204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402221311001 - 2⁶ = 402221310937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402221311003) 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, 8743941521 + ... + 8743941566.

It is an arithmetic number, because the mean of its divisors is an integer number (104927298528).

Almost surely, 2^402221311001 is an apocalyptic number.

It is an amenable number.

402221311001 is a deficient number, since it is larger than the sum of its proper divisors (17487883111).

402221311001 is a wasteful number, since it uses less digits than its factorization.

402221311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17487883110.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 402221311001 its reverse (100113122204), we get a palindrome (502334433205).

The spelling of 402221311001 in words is "four hundred two billion, two hundred twenty-one million, three hundred eleven thousand, one".