1021013123111 has 8 divisors (see below), whose sum is σ = 1041292873824. Its totient is φ = 1000847625120.

The previous prime is 1021013123099. The next prime is 1021013123113. The reversal of 1021013123111 is 1113213101201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021013123111 - 2⁶ = 1021013123047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021013123111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021013123113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28545131 + ... + 28580876.

It is an arithmetic number, because the mean of its divisors is an integer number (130161609228).

Almost surely, 2^{1021013123111} is an apocalyptic number.

1021013123111 is a deficient number, since it is larger than the sum of its proper divisors (20279750713).

1021013123111 is an equidigital number, since it uses as much as digits as its factorization.

1021013123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57126361.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1021013123111 its reverse (1113213101201), we get a palindrome (2134226224312).

The spelling of 1021013123111 in words is "one trillion, twenty-one billion, thirteen million, one hundred twenty-three thousand, one hundred eleven".