101232221999 has 4 divisors (see below), whose sum is σ = 101234633136. Its totient is φ = 101229810864.

The previous prime is 101232221971. The next prime is 101232222001. The reversal of 101232221999 is 999122232101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999122232101 = 7 ⋅142731747443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101232221999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101232221899) 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, 1141454 + ... + 1226939.

It is an arithmetic number, because the mean of its divisors is an integer number (25308658284).

Almost surely, 2^101232221999 is an apocalyptic number.

101232221999 is a deficient number, since it is larger than the sum of its proper divisors (2411137).

101232221999 is an equidigital number, since it uses as much as digits as its factorization.

101232221999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411136.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 101232221999 in words is "one hundred one billion, two hundred thirty-two million, two hundred twenty-one thousand, nine hundred ninety-nine".