1011255453121 has 4 divisors (see below), whose sum is σ = 1025498487744. Its totient is φ = 997012418500.

The previous prime is 1011255453073. The next prime is 1011255453139. The reversal of 1011255453121 is 1213545521101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011255453121 - 2¹³ = 1011255444929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011255853121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7121517205 + ... + 7121517346.

It is an arithmetic number, because the mean of its divisors is an integer number (256374621936).

Almost surely, 2^{1011255453121} is an apocalyptic number.

It is an amenable number.

1011255453121 is a deficient number, since it is larger than the sum of its proper divisors (14243034623).

1011255453121 is an equidigital number, since it uses as much as digits as its factorization.

1011255453121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243034622.

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 1011255453121 in words is "one trillion, eleven billion, two hundred fifty-five million, four hundred fifty-three thousand, one hundred twenty-one".