400210400202221 has 8 divisors (see below), whose sum is σ = 466013188376064. Its totient is φ = 336565080493200.

The previous prime is 400210400202211. The next prime is 400210400202241. The reversal of 400210400202221 is 122202004012004.

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

It is a cyclic number.

It is not a de Polignac number, because 400210400202221 - 2¹⁰ = 400210400201197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400210400202193 and 400210400202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400210400202211) 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, 539367115805 + ... + 539367116546.

It is an arithmetic number, because the mean of its divisors is an integer number (58251648547008).

Almost surely, 2^{400210400202221} is an apocalyptic number.

It is an amenable number.

400210400202221 is a deficient number, since it is larger than the sum of its proper divisors (65802788173843).

400210400202221 is a wasteful number, since it uses less digits than its factorization.

400210400202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078734232411.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 400210400202221 its reverse (122202004012004), we get a palindrome (522412404214225).

The spelling of 400210400202221 in words is "four hundred trillion, two hundred ten billion, four hundred million, two hundred two thousand, two hundred twenty-one".