121201401 has 8 divisors (see below), whose sum is σ = 162495424. Its totient is φ = 80354160.

The previous prime is 121201397. The next prime is 121201417. The reversal of 121201401 is 104102121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121201401 - 2² = 121201397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111061 + ... + 112146.

It is an arithmetic number, because the mean of its divisors is an integer number (20311928).

Almost surely, 2^121201401 is an apocalyptic number.

It is an amenable number.

121201401 is a deficient number, since it is larger than the sum of its proper divisors (41294023).

121201401 is a wasteful number, since it uses less digits than its factorization.

121201401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223391.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121201401 is about 11009.1507846882. The cubic root of 121201401 is about 494.8830128598.

Adding to 121201401 its reverse (104102121), we get a palindrome (225303522).

The spelling of 121201401 in words is "one hundred twenty-one million, two hundred one thousand, four hundred one".