402201120021 has 8 divisors (see below), whose sum is σ = 567813345984. Its totient is φ = 252361487040.

The previous prime is 402201120001. The next prime is 402201120053. The reversal of 402201120021 is 120021102204.

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

It is not a de Polignac number, because 402201120021 - 2¹⁷ = 402200988949 is a prime.

It is a super-2 number, since 2×402201120021² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402201120001) 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, 3943148185 + ... + 3943148286.

It is an arithmetic number, because the mean of its divisors is an integer number (70976668248).

Almost surely, 2^402201120021 is an apocalyptic number.

It is an amenable number.

402201120021 is a deficient number, since it is larger than the sum of its proper divisors (165612225963).

402201120021 is a wasteful number, since it uses less digits than its factorization.

402201120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886296491.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 402201120021 its reverse (120021102204), we get a palindrome (522222222225).

The spelling of 402201120021 in words is "four hundred two billion, two hundred one million, one hundred twenty thousand, twenty-one".