221422115125650 has 96 divisors (see below), whose sum is σ = 562229159405760. Its totient is φ = 57638668711680.

The previous prime is 221422115125529. The next prime is 221422115125663. The reversal of 221422115125650 is 56521511224122.

It is a junction number, because it is equal to n+sod(n) for n = 221422115125599 and 221422115125608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 781336 + ... + 21058364.

It is an arithmetic number, because the mean of its divisors is an integer number (5856553743810).

Almost surely, 2^{221422115125650} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221422115125650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281114579702880).

221422115125650 is an abundant number, since it is smaller than the sum of its proper divisors (340807044280110).

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

221422115125650 is a wasteful number, since it uses less digits than its factorization.

221422115125650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278780 (or 20278775 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

Adding to 221422115125650 its reverse (56521511224122), we get a palindrome (277943626349772).

The spelling of 221422115125650 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one hundred fifteen million, one hundred twenty-five thousand, six hundred fifty".