221836400202 has 16 divisors (see below), whose sum is σ = 448065601632. Its totient is φ = 73213333200.

The previous prime is 221836400173. The next prime is 221836400273. The reversal of 221836400202 is 202004638122.

221836400202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221836400202² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221836400202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183032728 + ... + 183033939.

It is an arithmetic number, because the mean of its divisors is an integer number (28004100102).

Almost surely, 2^221836400202 is an apocalyptic number.

221836400202 is an abundant number, since it is smaller than the sum of its proper divisors (226229201430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221836400202 is a wasteful number, since it uses less digits than its factorization.

221836400202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366066773.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 221836400202 in words is "two hundred twenty-one billion, eight hundred thirty-six million, four hundred thousand, two hundred two".