201210121001109 has 64 divisors (see below), whose sum is σ = 316056619008000. Its totient is φ = 112574382412800.

The previous prime is 201210121001093. The next prime is 201210121001261. The reversal of 201210121001109 is 901100121012102.

It is not a de Polignac number, because 201210121001109 - 2⁴ = 201210121001093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210121001909) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50899149 + ... + 54709629.

It is an arithmetic number, because the mean of its divisors is an integer number (4938384672000).

Almost surely, 2^{201210121001109} is an apocalyptic number.

201210121001109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

201210121001109 is a deficient number, since it is larger than the sum of its proper divisors (114846498006891).

201210121001109 is a wasteful number, since it uses less digits than its factorization.

201210121001109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3812946.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 201210121001109 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty-one million, one thousand, one hundred nine".