1021153125311 has 16 divisors (see below), whose sum is σ = 1114899552000. Its totient is φ = 927559449600.

The previous prime is 1021153125301. The next prime is 1021153125319. The reversal of 1021153125311 is 1135213511201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1021153125311 - 2¹⁰ = 1021153124287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021153125319) 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 15 ways as a sum of consecutive naturals, for example, 79827326 + ... + 79840116.

It is an arithmetic number, because the mean of its divisors is an integer number (69681222000).

Almost surely, 2^{1021153125311} is an apocalyptic number.

1021153125311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021153125311 is a deficient number, since it is larger than the sum of its proper divisors (93746426689).

1021153125311 is a wasteful number, since it uses less digits than its factorization.

1021153125311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18190.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 1021153125311 its reverse (1135213511201), we get a palindrome (2156366636512).

The spelling of 1021153125311 in words is "one trillion, twenty-one billion, one hundred fifty-three million, one hundred twenty-five thousand, three hundred eleven".