1025120350021 has 8 divisors (see below), whose sum is σ = 1026293119704. Its totient is φ = 1023947834880.

The previous prime is 1025120350013. The next prime is 1025120350043. The reversal of 1025120350021 is 1200530215201.

It can be written as a sum of positive squares in 4 ways, for example, as 396333202500 + 628787147521 = 629550^2 + 792961^2 .

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 1025120350021 - 2³ = 1025120350013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025120349974 and 1025120350001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025120350421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8676681 + ... + 8794033.

It is an arithmetic number, because the mean of its divisors is an integer number (128286639963).

Almost surely, 2^{1025120350021} is an apocalyptic number.

It is an amenable number.

1025120350021 is a deficient number, since it is larger than the sum of its proper divisors (1172769683).

1025120350021 is an equidigital number, since it uses as much as digits as its factorization.

1025120350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127271.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 1025120350021 its reverse (1200530215201), we get a palindrome (2225650565222).

The spelling of 1025120350021 in words is "one trillion, twenty-five billion, one hundred twenty million, three hundred fifty thousand, twenty-one".