1011021231012 has 72 divisors (see below), whose sum is σ = 2597770234080. Its totient is φ = 305810818560.

The previous prime is 1011021230983. The next prime is 1011021231037. The reversal of 1011021231012 is 2101321201101.

It is a junction number, because it is equal to n+sod(n) for n = 1011021230982 and 1011021231000.

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 23 ways as a sum of consecutive naturals, for example, 4105189 + ... + 4344492.

It is an arithmetic number, because the mean of its divisors is an integer number (36080142140).

Almost surely, 2^{1011021231012} is an apocalyptic number.

1011021231012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011021231012 is an abundant number, since it is smaller than the sum of its proper divisors (1586749003068).

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

1011021231012 is a wasteful number, since it uses less digits than its factorization.

1011021231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449773 (or 8449758 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1011021231012 its reverse (2101321201101), we get a palindrome (3112342432113).

The spelling of 1011021231012 in words is "one trillion, eleven billion, twenty-one million, two hundred thirty-one thousand, twelve".