1032202100021 has 4 divisors (see below), whose sum is σ = 1033782808332. Its totient is φ = 1030621391712.

The previous prime is 1032202100003. The next prime is 1032202100029. The reversal of 1032202100021 is 1200012022301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 420617102500 + 611584997521 = 648550^2 + 782039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1032202100021 - 2²⁶ = 1032134991157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1032202099969 and 1032202100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032202100029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790353176 + ... + 790354481.

It is an arithmetic number, because the mean of its divisors is an integer number (258445702083).

Almost surely, 2^{1032202100021} is an apocalyptic number.

It is an amenable number.

1032202100021 is a deficient number, since it is larger than the sum of its proper divisors (1580708311).

1032202100021 is an equidigital number, since it uses as much as digits as its factorization.

1032202100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580708310.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1032202100021 its reverse (1200012022301), we get a palindrome (2232214122322).

The spelling of 1032202100021 in words is "one trillion, thirty-two billion, two hundred two million, one hundred thousand, twenty-one".