101221202039 has 2 divisors, whose sum is σ = 101221202040. Its totient is φ = 101221202038.

The previous prime is 101221202023. The next prime is 101221202041. The reversal of 101221202039 is 930202122101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101221202039 - 2⁴ = 101221202023 is a prime.

It is a Sophie Germain prime.

Together with 101221202041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221202099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610601019 + 50610601020.

It is an arithmetic number, because the mean of its divisors is an integer number (50610601020).

Almost surely, 2^101221202039 is an apocalyptic number.

101221202039 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221202039 is an equidigital number, since it uses as much as digits as its factorization.

101221202039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 101221202039 in words is "one hundred one billion, two hundred twenty-one million, two hundred two thousand, thirty-nine".