201021120203 has 2 divisors, whose sum is σ = 201021120204. Its totient is φ = 201021120202.

The previous prime is 201021120149. The next prime is 201021120211. The reversal of 201021120203 is 302021120102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201021120203 - 2²² = 201016925899 is a prime.

It is a super-2 number, since 2×201021120203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201021120233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510560101 + 100510560102.

It is an arithmetic number, because the mean of its divisors is an integer number (100510560102).

Almost surely, 2^201021120203 is an apocalyptic number.

201021120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021120203 is an equidigital number, since it uses as much as digits as its factorization.

201021120203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 201021120203 its reverse (302021120102), we get a palindrome (503042240305).

The spelling of 201021120203 in words is "two hundred one billion, twenty-one million, one hundred twenty thousand, two hundred three".