1022121111120 has 40 divisors (see below), whose sum is σ = 3168575445216. Its totient is φ = 272565629568.

The previous prime is 1022121111119. The next prime is 1022121111149. The reversal of 1022121111120 is 211111212201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1022121111120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129418742 + ... + 2129419221.

Almost surely, 2^{1022121111120} is an apocalyptic number.

1022121111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121111120 is an abundant number, since it is smaller than the sum of its proper divisors (2146454334096).

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

1022121111120 is a wasteful number, since it uses less digits than its factorization.

1022121111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258837979 (or 4258837973 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1022121111120 its reverse (211111212201), we get a palindrome (1233232323321).

The spelling of 1022121111120 in words is "one trillion, twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty".