101021221200247 has 2 divisors, whose sum is σ = 101021221200248. Its totient is φ = 101021221200246.

The previous prime is 101021221200191. The next prime is 101021221200343. The reversal of 101021221200247 is 742002122120101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101021221200247 - 2¹⁵ = 101021221167479 is a prime.

It is a super-2 number, since 2×101021221200247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101021221200047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510610600123 + 50510610600124.

It is an arithmetic number, because the mean of its divisors is an integer number (50510610600124).

Almost surely, 2^{101021221200247} is an apocalyptic number.

101021221200247 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021221200247 is an equidigital number, since it uses as much as digits as its factorization.

101021221200247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 101021221200247 its reverse (742002122120101), we get a palindrome (843023343320348).

The spelling of 101021221200247 in words is "one hundred one trillion, twenty-one billion, two hundred twenty-one million, two hundred thousand, two hundred forty-seven".