1021115451025 has 48 divisors (see below), whose sum is σ = 1335935109760. Its totient is φ = 772094592000.

The previous prime is 1021115450989. The next prime is 1021115451113. The reversal of 1021115451025 is 5201545111201.

It is not a de Polignac number, because 1021115451025 - 2¹⁷ = 1021115319953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021115450984 and 1021115451002.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 705676852 + ... + 705678298.

Almost surely, 2^{1021115451025} is an apocalyptic number.

It is an amenable number.

1021115451025 is a deficient number, since it is larger than the sum of its proper divisors (314819658735).

1021115451025 is a wasteful number, since it uses less digits than its factorization.

1021115451025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3909 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

The spelling of 1021115451025 in words is "one trillion, twenty-one billion, one hundred fifteen million, four hundred fifty-one thousand, twenty-five".