221429224650 has 96 divisors (see below), whose sum is σ = 557609810688. Its totient is φ = 58140288000.

The previous prime is 221429224637. The next prime is 221429224651. The reversal of 221429224650 is 56422924122.

It is a junction number, because it is equal to n+sod(n) for n = 221429224599 and 221429224608.

It is not an unprimeable number, because it can be changed into a prime (221429224651) 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, 6564127 + ... + 6597773.

It is an arithmetic number, because the mean of its divisors is an integer number (5808435528).

Almost surely, 2^221429224650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221429224650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278804905344).

221429224650 is an abundant number, since it is smaller than the sum of its proper divisors (336180586038).

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

221429224650 is a wasteful number, since it uses less digits than its factorization.

221429224650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34336 (or 34331 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 221429224650 in words is "two hundred twenty-one billion, four hundred twenty-nine million, two hundred twenty-four thousand, six hundred fifty".