1011001220120 has 16 divisors (see below), whose sum is σ = 2274752745360. Its totient is φ = 404400488032.

The previous prime is 1011001220081. The next prime is 1011001220129. The reversal of 1011001220120 is 210221001101.

1011001220120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011001220129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12637515212 + ... + 12637515291.

It is an arithmetic number, because the mean of its divisors is an integer number (142172046585).

Almost surely, 2^{1011001220120} is an apocalyptic number.

1011001220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011001220120 is an abundant number, since it is smaller than the sum of its proper divisors (1263751525240).

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

1011001220120 is a wasteful number, since it uses less digits than its factorization.

1011001220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25275030514 (or 25275030510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011001220120 its reverse (210221001101), we get a palindrome (1221222221221).

The spelling of 1011001220120 in words is "one trillion, eleven billion, one million, two hundred twenty thousand, one hundred twenty".