201221230110355 has 16 divisors (see below), whose sum is σ = 297188278317504. Its totient is φ = 127366404992640.

The previous prime is 201221230110349. The next prime is 201221230110389. The reversal of 201221230110355 is 553011032122102.

It is not a de Polignac number, because 201221230110355 - 2³¹ = 201219082626707 is a prime.

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, 221122230436 + ... + 221122231345.

It is an arithmetic number, because the mean of its divisors is an integer number (18574267394844).

Almost surely, 2^{201221230110355} is an apocalyptic number.

201221230110355 is a deficient number, since it is larger than the sum of its proper divisors (95967048207149).

201221230110355 is a wasteful number, since it uses less digits than its factorization.

201221230110355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442244461806.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 201221230110355 its reverse (553011032122102), we get a palindrome (754232262232457).

The spelling of 201221230110355 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred thirty million, one hundred ten thousand, three hundred fifty-five".