1021455105135 has 32 divisors (see below), whose sum is σ = 1639744727808. Its totient is φ = 542971503360.

The previous prime is 1021455105107. The next prime is 1021455105137. The reversal of 1021455105135 is 5315015541201.

It is a happy number.

It is not a de Polignac number, because 1021455105135 - 2⁷ = 1021455105007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021455105096 and 1021455105105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021455105137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18059259 + ... + 18115731.

It is an arithmetic number, because the mean of its divisors is an integer number (51242022744).

Almost surely, 2^{1021455105135} is an apocalyptic number.

1021455105135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021455105135 is a deficient number, since it is larger than the sum of its proper divisors (618289622673).

1021455105135 is a wasteful number, since it uses less digits than its factorization.

1021455105135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60455.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 1021455105135 in words is "one trillion, twenty-one billion, four hundred fifty-five million, one hundred five thousand, one hundred thirty-five".