101110121220 has 48 divisors (see below), whose sum is σ = 283325168448. Its totient is φ = 26942048640.

The previous prime is 101110121207. The next prime is 101110121237. The reversal of 101110121220 is 22121011101.

It is a super-2 number, since 2×101110121220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101110121196 and 101110121205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566251 + ... + 723090.

It is an arithmetic number, because the mean of its divisors is an integer number (5902607676).

Almost surely, 2^101110121220 is an apocalyptic number.

101110121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101110121220 is an abundant number, since it is smaller than the sum of its proper divisors (182215047228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101110121220 is a wasteful number, since it uses less digits than its factorization.

101110121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290660 (or 1290658 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101110121220 its reverse (22121011101), we get a palindrome (123231132321).

The spelling of 101110121220 in words is "one hundred one billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty".