121043343401 has 4 divisors (see below), whose sum is σ = 122153832900. Its totient is φ = 119932853904.

The previous prime is 121043343371. The next prime is 121043343419. The reversal of 121043343401 is 104343340121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27544381225 + 93498962176 = 165965^2 + 305776^2 .

It is a cyclic number.

It is not a de Polignac number, because 121043343401 - 2¹⁰ = 121043342377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121043340401) 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, 555244586 + ... + 555244803.

It is an arithmetic number, because the mean of its divisors is an integer number (30538458225).

Almost surely, 2^121043343401 is an apocalyptic number.

It is an amenable number.

121043343401 is a deficient number, since it is larger than the sum of its proper divisors (1110489499).

121043343401 is a wasteful number, since it uses less digits than its factorization.

121043343401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110489498.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 121043343401 its reverse (104343340121), we get a palindrome (225386683522).

The spelling of 121043343401 in words is "one hundred twenty-one billion, forty-three million, three hundred forty-three thousand, four hundred one".