321121121104100 has 72 divisors (see below), whose sum is σ = 697341896928768. Its totient is φ = 128354621875200.

The previous prime is 321121121104087. The next prime is 321121121104103. The reversal of 321121121104100 is 1401121121123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (321121121104103) 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, 3069264389 + ... + 3069369011.

Almost surely, 2^{321121121104100} is an apocalyptic number.

It is an amenable number.

321121121104100 is an abundant number, since it is smaller than the sum of its proper divisors (376220775824668).

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

321121121104100 is a wasteful number, since it uses less digits than its factorization.

321121121104100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126765 (or 126758 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 321121121104100 its reverse (1401121121123), we get a palindrome (322522242225223).

The spelling of 321121121104100 in words is "three hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred four thousand, one hundred".