402201443021 has 16 divisors (see below), whose sum is σ = 489143289600. Its totient is φ = 322834533120.

The previous prime is 402201442997. The next prime is 402201443099. The reversal of 402201443021 is 120344102204.

It is a cyclic number.

It is not a de Polignac number, because 402201443021 - 2¹⁰ = 402201441997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402201443321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8468390 + ... + 8515751.

It is an arithmetic number, because the mean of its divisors is an integer number (30571455600).

Almost surely, 2^402201443021 is an apocalyptic number.

It is an amenable number.

402201443021 is a deficient number, since it is larger than the sum of its proper divisors (86941846579).

402201443021 is a wasteful number, since it uses less digits than its factorization.

402201443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16984364.

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

Adding to 402201443021 its reverse (120344102204), we get a palindrome (522545545225).

The spelling of 402201443021 in words is "four hundred two billion, two hundred one million, four hundred forty-three thousand, twenty-one".