1021123013111 has 8 divisors (see below), whose sum is σ = 1027133779200. Its totient is φ = 1015125740640.

The previous prime is 1021123013093. The next prime is 1021123013117. The reversal of 1021123013111 is 1113103211201.

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 1021123013111 - 2²⁶ = 1021055904247 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 1021123013111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021123013117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221591 + ... + 3524328.

It is an arithmetic number, because the mean of its divisors is an integer number (128391722400).

Almost surely, 2^{1021123013111} is an apocalyptic number.

1021123013111 is a deficient number, since it is larger than the sum of its proper divisors (6010766089).

1021123013111 is an equidigital number, since it uses as much as digits as its factorization.

1021123013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746809.

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

Adding to 1021123013111 its reverse (1113103211201), we get a palindrome (2134226224312).

The spelling of 1021123013111 in words is "one trillion, twenty-one billion, one hundred twenty-three million, thirteen thousand, one hundred eleven".