101221220211 has 8 divisors (see below), whose sum is σ = 134986290384. Its totient is φ = 67468481760.

The previous prime is 101221220207. The next prime is 101221220213. The reversal of 101221220211 is 112022122101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101221220211 - 2² = 101221220207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221220213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063760 + ... + 3096621.

It is an arithmetic number, because the mean of its divisors is an integer number (16873286298).

Almost surely, 2^101221220211 is an apocalyptic number.

101221220211 is a deficient number, since it is larger than the sum of its proper divisors (33765070173).

101221220211 is an equidigital number, since it uses as much as digits as its factorization.

101221220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6165861.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101221220211 its reverse (112022122101), we get a palindrome (213243342312).

The spelling of 101221220211 in words is "one hundred one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred eleven".