221422000645505 has 32 divisors (see below), whose sum is σ = 295876513283328. Its totient is φ = 157703756371200.

The previous prime is 221422000645493. The next prime is 221422000645577. The reversal of 221422000645505 is 505546000224122.

It is not a de Polignac number, because 221422000645505 - 2¹⁴ = 221422000629121 is a prime.

It is a super-3 number, since 3×221422000645505³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68625869 + ... + 71779898.

It is an arithmetic number, because the mean of its divisors is an integer number (9246141040104).

Almost surely, 2^{221422000645505} is an apocalyptic number.

It is an amenable number.

221422000645505 is a deficient number, since it is larger than the sum of its proper divisors (74454512637823).

221422000645505 is a wasteful number, since it uses less digits than its factorization.

221422000645505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140406377.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 221422000645505 its reverse (505546000224122), we get a palindrome (726968000869627).

The spelling of 221422000645505 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, six hundred forty-five thousand, five hundred five".