321204120401421 has 24 divisors (see below), whose sum is σ = 495844513542144. Its totient is φ = 199656290332800.

The previous prime is 321204120401401. The next prime is 321204120401431. The reversal of 321204120401421 is 124104021402123.

321204120401421 is a `hidden beast` number, since 3 + 2 + 1 + 204 + 12 + 0 + 401 + 42 + 1 = 666.

It is not a de Polignac number, because 321204120401421 - 2³¹ = 321201972917773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321204120401401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9810139405 + ... + 9810172146.

It is an arithmetic number, because the mean of its divisors is an integer number (20660188064256).

Almost surely, 2^{321204120401421} is an apocalyptic number.

It is an amenable number.

321204120401421 is a deficient number, since it is larger than the sum of its proper divisors (174640393140723).

321204120401421 is a wasteful number, since it uses less digits than its factorization.

321204120401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19620311681 (or 19620311678 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 321204120401421 its reverse (124104021402123), we get a palindrome (445308141803544).

The spelling of 321204120401421 in words is "three hundred twenty-one trillion, two hundred four billion, one hundred twenty million, four hundred one thousand, four hundred twenty-one".