101220111201971 has 2 divisors, whose sum is σ = 101220111201972. Its totient is φ = 101220111201970.

The previous prime is 101220111201959. The next prime is 101220111202027. The reversal of 101220111201971 is 179102111022101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101220111201971 - 2⁶ = 101220111201907 is a prime.

It is not a weakly prime, because it can be changed into another prime (101220111201871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610055600985 + 50610055600986.

It is an arithmetic number, because the mean of its divisors is an integer number (50610055600986).

Almost surely, 2^{101220111201971} is an apocalyptic number.

101220111201971 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220111201971 is an equidigital number, since it uses as much as digits as its factorization.

101220111201971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 101220111201971 in words is "one hundred one trillion, two hundred twenty billion, one hundred eleven million, two hundred one thousand, nine hundred seventy-one".