201100001245 has 64 divisors (see below), whose sum is σ = 302716237824. Its totient is φ = 126130878720.

The previous prime is 201100001183. The next prime is 201100001251. The reversal of 201100001245 is 542100001102.

It is not a de Polignac number, because 201100001245 - 2²³ = 201091612637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 564942 + ... + 849328.

It is an arithmetic number, because the mean of its divisors is an integer number (4729941216).

Almost surely, 2^201100001245 is an apocalyptic number.

It is an amenable number.

201100001245 is a deficient number, since it is larger than the sum of its proper divisors (101616236579).

201100001245 is a wasteful number, since it uses less digits than its factorization.

201100001245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284482.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 201100001245 its reverse (542100001102), we get a palindrome (743200002347).

The spelling of 201100001245 in words is "two hundred one billion, one hundred million, one thousand, two hundred forty-five".