201001013122 has 64 divisors (see below), whose sum is σ = 384534501120. Its totient is φ = 76642949376.

The previous prime is 201001013117. The next prime is 201001013123. The reversal of 201001013122 is 221310100102.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (201001013123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3065748 + ... + 3130624.

It is an arithmetic number, because the mean of its divisors is an integer number (6008351580).

Almost surely, 2^201001013122 is an apocalyptic number.

201001013122 is a deficient number, since it is larger than the sum of its proper divisors (183533487998).

201001013122 is a wasteful number, since it uses less digits than its factorization.

201001013122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65515.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201001013122 its reverse (221310100102), we get a palindrome (422311113224).

The spelling of 201001013122 in words is "two hundred one billion, one million, thirteen thousand, one hundred twenty-two".