1111000121220 has 48 divisors (see below), whose sum is σ = 3393600372288. Its totient is φ = 269333362560.

The previous prime is 1111000121177. The next prime is 1111000121233. The reversal of 1111000121220 is 221210001111.

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 = 1111000121196 and 1111000121205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841666099 + ... + 841667418.

It is an arithmetic number, because the mean of its divisors is an integer number (70700007756).

Almost surely, 2^{1111000121220} is an apocalyptic number.

1111000121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111000121220 is an abundant number, since it is smaller than the sum of its proper divisors (2282600251068).

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

1111000121220 is a wasteful number, since it uses less digits than its factorization.

1111000121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683333540 (or 1683333538 counting only the distinct ones).

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

Adding to 1111000121220 its reverse (221210001111), we get a palindrome (1332210122331).

The spelling of 1111000121220 in words is "one trillion, one hundred eleven billion, one hundred twenty-one thousand, two hundred twenty".