1011012123020 has 48 divisors (see below), whose sum is σ = 2151888294528. Its totient is φ = 398955129600.

The previous prime is 1011012123013. The next prime is 1011012123031. The reversal of 1011012123020 is 203212101101.

It is a super-2 number, since 2×1011012123020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011012122986 and 1011012123004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343892 + ... + 1462971.

It is an arithmetic number, because the mean of its divisors is an integer number (44831006136).

Almost surely, 2^{1011012123020} is an apocalyptic number.

1011012123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011012123020 is an abundant number, since it is smaller than the sum of its proper divisors (1140876171508).

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

1011012123020 is a wasteful number, since it uses less digits than its factorization.

1011012123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807250 (or 1807248 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1011012123020 its reverse (203212101101), we get a palindrome (1214224224121).

The spelling of 1011012123020 in words is "one trillion, eleven billion, twelve million, one hundred twenty-three thousand, twenty".