9028312621201 has 4 divisors (see below), whose sum is σ = 9339633746100. Its totient is φ = 8716991496304.

The previous prime is 9028312621199. The next prime is 9028312621261. The reversal of 9028312621201 is 1021262138209.

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 6028124890176 + 3000187731025 = 2455224^2 + 1732105^2 .

It is a cyclic number.

It is not a de Polignac number, because 9028312621201 - 2¹ = 9028312621199 is a prime.

It is a super-2 number, since 2×9028312621201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9028312621261) 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, 155660562406 + ... + 155660562463.

It is an arithmetic number, because the mean of its divisors is an integer number (2334908436525).

Almost surely, 2^{9028312621201} is an apocalyptic number.

It is an amenable number.

9028312621201 is a deficient number, since it is larger than the sum of its proper divisors (311321124899).

9028312621201 is a wasteful number, since it uses less digits than its factorization.

9028312621201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311321124898.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 9028312621201 in words is "nine trillion, twenty-eight billion, three hundred twelve million, six hundred twenty-one thousand, two hundred one".