121400422321 has 24 divisors (see below), whose sum is σ = 130823347104. Its totient is φ = 112262008320.

The previous prime is 121400422307. The next prime is 121400422393. The reversal of 121400422321 is 123224004121.

It is not a de Polignac number, because 121400422321 - 2⁷ = 121400422193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121400422292 and 121400422301.

It is not an unprimeable number, because it can be changed into a prime (121400422921) 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, 21946326 + ... + 21951856.

It is an arithmetic number, because the mean of its divisors is an integer number (5450972796).

Almost surely, 2^121400422321 is an apocalyptic number.

It is an amenable number.

121400422321 is a deficient number, since it is larger than the sum of its proper divisors (9422924783).

121400422321 is an equidigital number, since it uses as much as digits as its factorization.

121400422321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889 (or 5800 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121400422321 its reverse (123224004121), we get a palindrome (244624426442).

The spelling of 121400422321 in words is "one hundred twenty-one billion, four hundred million, four hundred twenty-two thousand, three hundred twenty-one".