201001011001123 has 32 divisors (see below), whose sum is σ = 218182070534400. Its totient is φ = 184479973438464.

The previous prime is 201001011001079. The next prime is 201001011001127. The reversal of 201001011001123 is 321100110100102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201001011001123 - 2⁹ = 201001011000611 is a prime.

It is a super-2 number, since 2×201001011001123² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201001011001127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53108023 + ... + 56766751.

It is an arithmetic number, because the mean of its divisors is an integer number (6818189704200).

Almost surely, 2^{201001011001123} is an apocalyptic number.

201001011001123 is a deficient number, since it is larger than the sum of its proper divisors (17181059533277).

201001011001123 is a wasteful number, since it uses less digits than its factorization.

201001011001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659299.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 201001011001123 its reverse (321100110100102), we get a palindrome (522101121101225).

The spelling of 201001011001123 in words is "two hundred one trillion, one billion, eleven million, one thousand, one hundred twenty-three".