24121102122221 has 8 divisors (see below), whose sum is σ = 25979522516640. Its totient is φ = 22263103299312.

The previous prime is 24121102122209. The next prime is 24121102122251. The reversal of 24121102122221 is 12222120112142.

It is a happy number.

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 24121102122221 - 2⁶ = 24121102122157 is a prime.

It is a super-2 number, since 2×24121102122221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24121102122251) 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, 105274031 + ... + 105502908.

It is an arithmetic number, because the mean of its divisors is an integer number (3247440314580).

Almost surely, 2^{24121102122221} is an apocalyptic number.

It is an amenable number.

24121102122221 is a deficient number, since it is larger than the sum of its proper divisors (1858420394419).

24121102122221 is a wasteful number, since it uses less digits than its factorization.

24121102122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210785755.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 24121102122221 its reverse (12222120112142), we get a palindrome (36343222234363).

The spelling of 24121102122221 in words is "twenty-four trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".