210101221139 has 2 divisors, whose sum is σ = 210101221140. Its totient is φ = 210101221138.

The previous prime is 210101221111. The next prime is 210101221147. The reversal of 210101221139 is 931122101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210101221139 - 2⁸ = 210101220883 is a prime.

It is not a weakly prime, because it can be changed into another prime (210101221439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050610569 + 105050610570.

It is an arithmetic number, because the mean of its divisors is an integer number (105050610570).

Almost surely, 2^210101221139 is an apocalyptic number.

210101221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

210101221139 is an equidigital number, since it uses as much as digits as its factorization.

210101221139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 210101221139 in words is "two hundred ten billion, one hundred one million, two hundred twenty-one thousand, one hundred thirty-nine".