1020125534021 has 8 divisors (see below), whose sum is σ = 1148763065088. Its totient is φ = 897471144000.

The previous prime is 1020125534011. The next prime is 1020125534063. The reversal of 1020125534021 is 1204355210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020125534021 - 2³⁴ = 1002945664837 is a prime.

It is a super-2 number, since 2×1020125534021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020125534011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495784900 + ... + 1495785581.

It is an arithmetic number, because the mean of its divisors is an integer number (143595383136).

Almost surely, 2^{1020125534021} is an apocalyptic number.

1020125534021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020125534021 is a deficient number, since it is larger than the sum of its proper divisors (128637531067).

1020125534021 is a wasteful number, since it uses less digits than its factorization.

1020125534021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991570523.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 1020125534021 in words is "one trillion, twenty billion, one hundred twenty-five million, five hundred thirty-four thousand, twenty-one".