201101221245 has 16 divisors (see below), whose sum is σ = 327832935552. Its totient is φ = 105230324160.

The previous prime is 201101221199. The next prime is 201101221253. The reversal of 201101221245 is 542122101102.

It is not a de Polignac number, because 201101221245 - 2⁷ = 201101221117 is a prime.

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, 126477961 + ... + 126479550.

It is an arithmetic number, because the mean of its divisors is an integer number (20489558472).

Almost surely, 2^201101221245 is an apocalyptic number.

It is an amenable number.

201101221245 is a deficient number, since it is larger than the sum of its proper divisors (126731714307).

201101221245 is a wasteful number, since it uses less digits than its factorization.

201101221245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252957572.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 201101221245 its reverse (542122101102), we get a palindrome (743223322347).

The spelling of 201101221245 in words is "two hundred one billion, one hundred one million, two hundred twenty-one thousand, two hundred forty-five".