101220120247 has 2 divisors, whose sum is σ = 101220120248. Its totient is φ = 101220120246.

The previous prime is 101220120233. The next prime is 101220120251. The reversal of 101220120247 is 742021022101.

It is a strong prime.

It is an emirp because it is prime and its reverse (742021022101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101220120247 - 2¹¹ = 101220118199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220120227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610060123 + 50610060124.

It is an arithmetic number, because the mean of its divisors is an integer number (50610060124).

Almost surely, 2^101220120247 is an apocalyptic number.

101220120247 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220120247 is an equidigital number, since it uses as much as digits as its factorization.

101220120247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 101220120247 its reverse (742021022101), we get a palindrome (843241142348).

The spelling of 101220120247 in words is "one hundred one billion, two hundred twenty million, one hundred twenty thousand, two hundred forty-seven".