121001000320 has 32 divisors (see below), whose sum is σ = 289268017920. Its totient is φ = 48400399872.

The previous prime is 121001000303. The next prime is 121001000327. The reversal of 121001000320 is 23000100121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121001000297 and 121001000306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001000327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94531392 + ... + 94532671.

It is an arithmetic number, because the mean of its divisors is an integer number (9039625560).

Almost surely, 2^121001000320 is an apocalyptic number.

121001000320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001000320 is an abundant number, since it is smaller than the sum of its proper divisors (168267017600).

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

121001000320 is an equidigital number, since it uses as much as digits as its factorization.

121001000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189064082 (or 189064070 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 121001000320 its reverse (23000100121), we get a palindrome (144001100441).

The spelling of 121001000320 in words is "one hundred twenty-one billion, one million, three hundred twenty", and thus it is an aban number.