221032434402 has 96 divisors (see below), whose sum is σ = 551184746112. Its totient is φ = 63411052032.

The previous prime is 221032434401. The next prime is 221032434499. The reversal of 221032434402 is 204434230122.

221032434402 is a `hidden beast` number, since 2 + 2 + 10 + 3 + 243 + 4 + 402 = 666.

It is not an unprimeable number, because it can be changed into a prime (221032434401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166003 + ... + 685289.

It is an arithmetic number, because the mean of its divisors is an integer number (5741507772).

Almost surely, 2^221032434402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221032434402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275592373056).

221032434402 is an abundant number, since it is smaller than the sum of its proper divisors (330152311710).

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

221032434402 is a wasteful number, since it uses less digits than its factorization.

221032434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519432 (or 519429 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 221032434402 its reverse (204434230122), we get a palindrome (425466664524).

The spelling of 221032434402 in words is "two hundred twenty-one billion, thirty-two million, four hundred thirty-four thousand, four hundred two".