201121012220203 has 16 divisors (see below), whose sum is σ = 222250331545920. Its totient is φ = 181027834454016.

The previous prime is 201121012220201. The next prime is 201121012220269. The reversal of 201121012220203 is 302022210121102.

It is a cyclic number.

It is not a de Polignac number, because 201121012220203 - 2¹ = 201121012220201 is a prime.

It is a super-2 number, since 2×201121012220203² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121012220201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44004600 + ... + 48359557.

It is an arithmetic number, because the mean of its divisors is an integer number (13890645721620).

Almost surely, 2^{201121012220203} is an apocalyptic number.

201121012220203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201121012220203 is a deficient number, since it is larger than the sum of its proper divisors (21129319325717).

201121012220203 is a wasteful number, since it uses less digits than its factorization.

201121012220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92369766.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201121012220203 its reverse (302022210121102), we get a palindrome (503143222341305).

The spelling of 201121012220203 in words is "two hundred one trillion, one hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred three".