1010111121020 has 12 divisors (see below), whose sum is σ = 2121233354184. Its totient is φ = 404044448400.

The previous prime is 1010111120999. The next prime is 1010111121023. The reversal of 1010111121020 is 201211110101.

It is a junction number, because it is equal to n+sod(n) for n = 1010111120992 and 1010111121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010111121023) 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, 25252778006 + ... + 25252778045.

It is an arithmetic number, because the mean of its divisors is an integer number (176769446182).

Almost surely, 2^{1010111121020} is an apocalyptic number.

1010111121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010111121020 is an abundant number, since it is smaller than the sum of its proper divisors (1111122233164).

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

1010111121020 is a wasteful number, since it uses less digits than its factorization.

1010111121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50505556060 (or 50505556058 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1010111121020 its reverse (201211110101), we get a palindrome (1211322231121).

The spelling of 1010111121020 in words is "one trillion, ten billion, one hundred eleven million, one hundred twenty-one thousand, twenty".