321145010402 has 16 divisors (see below), whose sum is σ = 492941829600. Its totient is φ = 156831394272.

The previous prime is 321145010401. The next prime is 321145010441. The reversal of 321145010402 is 204010541123.

It is a super-2 number, since 2×321145010402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321145010401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2292593 + ... + 2428635.

It is an arithmetic number, because the mean of its divisors is an integer number (30808864350).

Almost surely, 2^321145010402 is an apocalyptic number.

321145010402 is a deficient number, since it is larger than the sum of its proper divisors (171796819198).

321145010402 is a wasteful number, since it uses less digits than its factorization.

321145010402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163537.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 321145010402 its reverse (204010541123), we get a palindrome (525155551525).

The spelling of 321145010402 in words is "three hundred twenty-one billion, one hundred forty-five million, ten thousand, four hundred two".