124203021222091 has 4 divisors (see below), whose sum is σ = 141946309968112. Its totient is φ = 106459732476072.

The previous prime is 124203021222089. The next prime is 124203021222143. The reversal of 124203021222091 is 190222120302421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 124203021222091 - 2¹ = 124203021222089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124203021225091) 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, 8871644373000 + ... + 8871644373013.

It is an arithmetic number, because the mean of its divisors is an integer number (35486577492028).

Almost surely, 2^{124203021222091} is an apocalyptic number.

124203021222091 is a deficient number, since it is larger than the sum of its proper divisors (17743288746021).

124203021222091 is an equidigital number, since it uses as much as digits as its factorization.

124203021222091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17743288746020.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 124203021222091 in words is "one hundred twenty-four trillion, two hundred three billion, twenty-one million, two hundred twenty-two thousand, ninety-one".