121047401 has 4 divisors (see below), whose sum is σ = 121429572. Its totient is φ = 120665232.

The previous prime is 121047391. The next prime is 121047469. The reversal of 121047401 is 104740121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104740121 = 1291 ⋅81131.

It can be written as a sum of positive squares in 2 ways, for example, as 59660176 + 61387225 = 7724^2 + 7835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121047401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121047481) 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, 190610 + ... + 191243.

It is an arithmetic number, because the mean of its divisors is an integer number (30357393).

Almost surely, 2^121047401 is an apocalyptic number.

It is an amenable number.

121047401 is a deficient number, since it is larger than the sum of its proper divisors (382171).

121047401 is an equidigital number, since it uses as much as digits as its factorization.

121047401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382170.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 121047401 is about 11002.1543799385. The cubic root of 121047401 is about 494.6733225295.

Adding to 121047401 its reverse (104740121), we get a palindrome (225787522).

The spelling of 121047401 in words is "one hundred twenty-one million, forty-seven thousand, four hundred one".