10111011101220 has 24 divisors (see below), whose sum is σ = 28310831083584. Its totient is φ = 2696269626976.

The previous prime is 10111011101207. The next prime is 10111011101221. The reversal of 10111011101220 is 2210111011101.

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 = 10111011101196 and 10111011101205.

It is not an unprimeable number, because it can be changed into a prime (10111011101221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84258425784 + ... + 84258425903.

It is an arithmetic number, because the mean of its divisors is an integer number (1179617961816).

Almost surely, 2^{10111011101220} is an apocalyptic number.

10111011101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111011101220 is an abundant number, since it is smaller than the sum of its proper divisors (18199819982364).

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

10111011101220 is a wasteful number, since it uses less digits than its factorization.

10111011101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168516851699 (or 168516851697 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 10111011101220 its reverse (2210111011101), we get a palindrome (12321122112321).

The spelling of 10111011101220 in words is "ten trillion, one hundred eleven billion, eleven million, one hundred one thousand, two hundred twenty".