321145002101 has 16 divisors (see below), whose sum is σ = 400657614720. Its totient is φ = 250074708480.

The previous prime is 321145002077. The next prime is 321145002133. The reversal of 321145002101 is 101200541123.

It is a cyclic number.

It is not a de Polignac number, because 321145002101 - 2¹⁸ = 321144739957 is a prime.

It is a super-2 number, since 2×321145002101² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321145002151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285856 + ... + 1515161.

It is an arithmetic number, because the mean of its divisors is an integer number (25041100920).

Almost surely, 2^321145002101 is an apocalyptic number.

It is an amenable number.

321145002101 is a deficient number, since it is larger than the sum of its proper divisors (79512612619).

321145002101 is a wasteful number, since it uses less digits than its factorization.

321145002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802524.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 321145002101 its reverse (101200541123), we get a palindrome (422345543224).

The spelling of 321145002101 in words is "three hundred twenty-one billion, one hundred forty-five million, two thousand, one hundred one".