222011105551 has 16 divisors (see below), whose sum is σ = 237090470400. Its totient is φ = 207283606848.

The previous prime is 222011105543. The next prime is 222011105567. The reversal of 222011105551 is 155501110222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222011105551 - 2³ = 222011105543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222011103551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472890 + ... + 817096.

It is an arithmetic number, because the mean of its divisors is an integer number (14818154400).

Almost surely, 2^222011105551 is an apocalyptic number.

222011105551 is a deficient number, since it is larger than the sum of its proper divisors (15079364849).

222011105551 is a wasteful number, since it uses less digits than its factorization.

222011105551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344718.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 222011105551 its reverse (155501110222), we get a palindrome (377512215773).

The spelling of 222011105551 in words is "two hundred twenty-two billion, eleven million, one hundred five thousand, five hundred fifty-one".