101221203211 has 4 divisors (see below), whose sum is σ = 101224123000. Its totient is φ = 101218283424.

The previous prime is 101221203199. The next prime is 101221203233. The reversal of 101221203211 is 112302122101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101221203211 - 2²³ = 101212814603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221203241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407261 + ... + 1477438.

It is an arithmetic number, because the mean of its divisors is an integer number (25306030750).

Almost surely, 2^101221203211 is an apocalyptic number.

101221203211 is a deficient number, since it is larger than the sum of its proper divisors (2919789).

101221203211 is an equidigital number, since it uses as much as digits as its factorization.

101221203211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919788.

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

Adding to 101221203211 its reverse (112302122101), we get a palindrome (213523325312).

The spelling of 101221203211 in words is "one hundred one billion, two hundred twenty-one million, two hundred three thousand, two hundred eleven".