201121120021003 has 64 divisors (see below), whose sum is σ = 257797990195200. Its totient is φ = 152606116938240.

The previous prime is 201121120021001. The next prime is 201121120021007. The reversal of 201121120021003 is 300120021121102.

It is not a de Polignac number, because 201121120021003 - 2¹ = 201121120021001 is a prime.

It is a super-2 number, since 2×201121120021003² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201121120021001) 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, 474140338 + ... + 474564328.

It is an arithmetic number, because the mean of its divisors is an integer number (4028093596800).

Almost surely, 2^{201121120021003} is an apocalyptic number.

201121120021003 is a deficient number, since it is larger than the sum of its proper divisors (56676870174197).

201121120021003 is a wasteful number, since it uses less digits than its factorization.

201121120021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425252.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201121120021003 its reverse (300120021121102), we get a palindrome (501241141142105).

The spelling of 201121120021003 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, three".