1021210104401 has 4 divisors (see below), whose sum is σ = 1023568557732. Its totient is φ = 1018851651072.

The previous prime is 1021210104373. The next prime is 1021210104451. The reversal of 1021210104401 is 1044010121201.

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 461107544401 + 560102560000 = 679049^2 + 748400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021210104401 - 2³⁴ = 1004030235217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021210104401.

It is not an unprimeable number, because it can be changed into a prime (1021210104451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179226016 + ... + 1179226881.

It is an arithmetic number, because the mean of its divisors is an integer number (255892139433).

Almost surely, 2^{1021210104401} is an apocalyptic number.

It is an amenable number.

1021210104401 is a deficient number, since it is larger than the sum of its proper divisors (2358453331).

1021210104401 is an equidigital number, since it uses as much as digits as its factorization.

1021210104401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358453330.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021210104401 its reverse (1044010121201), we get a palindrome (2065220225602).

The spelling of 1021210104401 in words is "one trillion, twenty-one billion, two hundred ten million, one hundred four thousand, four hundred one".