221616221420222 has 32 divisors (see below), whose sum is σ = 339203199212640. Its totient is φ = 108571428725760.

The previous prime is 221616221420203. The next prime is 221616221420287. The reversal of 221616221420222 is 222024122616122.

It is a super-2 number, since 2×221616221420222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98105597 + ... + 100339127.

It is an arithmetic number, because the mean of its divisors is an integer number (10600099975395).

Almost surely, 2^{221616221420222} is an apocalyptic number.

221616221420222 is a deficient number, since it is larger than the sum of its proper divisors (117586977792418).

221616221420222 is a wasteful number, since it uses less digits than its factorization.

221616221420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238668.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 221616221420222 in words is "two hundred twenty-one trillion, six hundred sixteen billion, two hundred twenty-one million, four hundred twenty thousand, two hundred twenty-two".