1011102021020 has 96 divisors (see below), whose sum is σ = 2622230368128. Its totient is φ = 318904814592.

The previous prime is 1011102020989. The next prime is 1011102021091. The reversal of 1011102021020 is 201202011101.

It is a junction number, because it is equal to n+sod(n) for n = 1011102020992 and 1011102021010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414779 + ... + 1481298.

It is an arithmetic number, because the mean of its divisors is an integer number (27314899668).

Almost surely, 2^{1011102021020} is an apocalyptic number.

1011102021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011102021020 is an abundant number, since it is smaller than the sum of its proper divisors (1611128347108).

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

1011102021020 is a wasteful number, since it uses less digits than its factorization.

1011102021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896399 (or 1896397 counting only the distinct ones).

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

Adding to 1011102021020 its reverse (201202011101), we get a palindrome (1212304032121).

The spelling of 1011102021020 in words is "one trillion, eleven billion, one hundred two million, twenty-one thousand, twenty".