101220111011 has 8 divisors (see below), whose sum is σ = 101908222464. Its totient is φ = 100532233800.

The previous prime is 101220110977. The next prime is 101220111023. The reversal of 101220111011 is 110111022101.

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

It is a cyclic number.

It is not a de Polignac number, because 101220111011 - 2²⁶ = 101153002147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220110983 and 101220111001.

It is not an unprimeable number, because it can be changed into a prime (101220111911) 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, 857030 + ... + 967956.

It is an arithmetic number, because the mean of its divisors is an integer number (12738527808).

Almost surely, 2^101220111011 is an apocalyptic number.

101220111011 is a deficient number, since it is larger than the sum of its proper divisors (688111453).

101220111011 is a wasteful number, since it uses less digits than its factorization.

101220111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117121.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101220111011 its reverse (110111022101), we get a palindrome (211331133112).

The spelling of 101220111011 in words is "one hundred one billion, two hundred twenty million, one hundred eleven thousand, eleven".