201221032031 has 2 divisors, whose sum is σ = 201221032032. Its totient is φ = 201221032030.

The previous prime is 201221032021. The next prime is 201221032057. The reversal of 201221032031 is 130230122102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201221032031 - 2¹⁰ = 201221031007 is a prime.

It is a super-2 number, since 2×201221032031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201221032021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610516015 + 100610516016.

It is an arithmetic number, because the mean of its divisors is an integer number (100610516016).

Almost surely, 2^201221032031 is an apocalyptic number.

201221032031 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221032031 is an equidigital number, since it uses as much as digits as its factorization.

201221032031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201221032031 its reverse (130230122102), we get a palindrome (331451154133).

The spelling of 201221032031 in words is "two hundred one billion, two hundred twenty-one million, thirty-two thousand, thirty-one".