221213101434 has 64 divisors (see below), whose sum is σ = 483952299264. Its totient is φ = 66998831616.

The previous prime is 221213101381. The next prime is 221213101457. The reversal of 221213101434 is 434101312122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2825464 + ... + 2902700.

It is an arithmetic number, because the mean of its divisors is an integer number (7561754676).

Almost surely, 2^221213101434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221213101434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241976149632).

221213101434 is an abundant number, since it is smaller than the sum of its proper divisors (262739197830).

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

221213101434 is a wasteful number, since it uses less digits than its factorization.

221213101434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77831.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 221213101434 its reverse (434101312122), we get a palindrome (655314413556).

The spelling of 221213101434 in words is "two hundred twenty-one billion, two hundred thirteen million, one hundred one thousand, four hundred thirty-four".