121223141 has 8 divisors (see below), whose sum is σ = 138227544. Its totient is φ = 105315840.

The previous prime is 121223117. The next prime is 121223147. The reversal of 121223141 is 141322121.

It can be written as a sum of positive squares in 4 ways, for example, as 5982916 + 115240225 = 2446^2 + 10735^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121223141 - 2²² = 117028837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121223147) 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, 274040 + ... + 274481.

It is an arithmetic number, because the mean of its divisors is an integer number (17278443).

Almost surely, 2^121223141 is an apocalyptic number.

It is an amenable number.

121223141 is a deficient number, since it is larger than the sum of its proper divisors (17004403).

121223141 is a wasteful number, since it uses less digits than its factorization.

121223141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548551.

The product of its digits is 96, while the sum is 17.

The square root of 121223141 is about 11010.1381008596. The cubic root of 121223141 is about 494.9126002887.

Adding to 121223141 its reverse (141322121), we get a palindrome (262545262).

The spelling of 121223141 in words is "one hundred twenty-one million, two hundred twenty-three thousand, one hundred forty-one".