221994133914 has 64 divisors (see below), whose sum is σ = 524328026112. Its totient is φ = 61317043200.

The previous prime is 221994133891. The next prime is 221994133919. The reversal of 221994133914 is 419331499122.

It is not an unprimeable number, because it can be changed into a prime (221994133919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1170874 + ... + 1347194.

It is an arithmetic number, because the mean of its divisors is an integer number (8192625408).

Almost surely, 2^221994133914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221994133914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262164013056).

221994133914 is an abundant number, since it is smaller than the sum of its proper divisors (302333892198).

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

221994133914 is a wasteful number, since it uses less digits than its factorization.

221994133914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177331.

The product of its digits is 419904, while the sum is 48.

The spelling of 221994133914 in words is "two hundred twenty-one billion, nine hundred ninety-four million, one hundred thirty-three thousand, nine hundred fourteen".