1021255353255 has 16 divisors (see below), whose sum is σ = 1638945154944. Its totient is φ = 543023991840.

The previous prime is 1021255353233. The next prime is 1021255353259. The reversal of 1021255353255 is 5523535521201.

1021255353255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021255353255 - 2²² = 1021251158951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021255353259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102840489 + ... + 102850418.

It is an arithmetic number, because the mean of its divisors is an integer number (102434072184).

Almost surely, 2^{1021255353255} is an apocalyptic number.

1021255353255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021255353255 is a deficient number, since it is larger than the sum of its proper divisors (617689801689).

1021255353255 is a wasteful number, since it uses less digits than its factorization.

1021255353255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205691246.

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 1021255353255 in words is "one trillion, twenty-one billion, two hundred fifty-five million, three hundred fifty-three thousand, two hundred fifty-five".