101220120211 has 6 divisors (see below), whose sum is σ = 117745854180. Its totient is φ = 86760102996.

The previous prime is 101220120191. The next prime is 101220120227. The reversal of 101220120211 is 112021022101.

It is not a de Polignac number, because 101220120211 - 2¹¹ = 101220118163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220120191 and 101220120200.

It is not an unprimeable number, because it can be changed into a prime (101220120251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1032858321 + ... + 1032858418.

It is an arithmetic number, because the mean of its divisors is an integer number (19624309030).

Almost surely, 2^101220120211 is an apocalyptic number.

101220120211 is a deficient number, since it is larger than the sum of its proper divisors (16525733969).

101220120211 is an equidigital number, since it uses as much as digits as its factorization.

101220120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065716753 (or 2065716746 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101220120211 its reverse (112021022101), we get a palindrome (213241142312).

The spelling of 101220120211 in words is "one hundred one billion, two hundred twenty million, one hundred twenty thousand, two hundred eleven".