321145002102 has 16 divisors (see below), whose sum is σ = 642535090992. Its totient is φ = 107007486240.

The previous prime is 321145002077. The next prime is 321145002133. The reversal of 321145002102 is 201200541123.

It is a super-2 number, since 2×321145002102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10194913 + ... + 10226364.

It is an arithmetic number, because the mean of its divisors is an integer number (40158443187).

Almost surely, 2^321145002102 is an apocalyptic number.

321145002102 is an abundant number, since it is smaller than the sum of its proper divisors (321390088890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321145002102 is a wasteful number, since it uses less digits than its factorization.

321145002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20423903.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 321145002102 its reverse (201200541123), we get a palindrome (522345543225).

The spelling of 321145002102 in words is "three hundred twenty-one billion, one hundred forty-five million, two thousand, one hundred two".