124402221221 has 8 divisors (see below), whose sum is σ = 129868329024. Its totient is φ = 118940889760.

The previous prime is 124402221217. The next prime is 124402221233. The reversal of 124402221221 is 122122204421.

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 124402221221 - 2² = 124402221217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124402221271) 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, 1140800 + ... + 1245081.

It is an arithmetic number, because the mean of its divisors is an integer number (16233541128).

Almost surely, 2^124402221221 is an apocalyptic number.

It is an amenable number.

124402221221 is a deficient number, since it is larger than the sum of its proper divisors (5466107803).

124402221221 is a wasteful number, since it uses less digits than its factorization.

124402221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388171.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 124402221221 its reverse (122122204421), we get a palindrome (246524425642).

The spelling of 124402221221 in words is "one hundred twenty-four billion, four hundred two million, two hundred twenty-one thousand, two hundred twenty-one".