101551221271 has 2 divisors, whose sum is σ = 101551221272. Its totient is φ = 101551221270.

The previous prime is 101551221241. The next prime is 101551221463. The reversal of 101551221271 is 172122155101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101551221271 - 2⁷ = 101551221143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101551221241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50775610635 + 50775610636.

It is an arithmetic number, because the mean of its divisors is an integer number (50775610636).

Almost surely, 2^101551221271 is an apocalyptic number.

101551221271 is a deficient number, since it is larger than the sum of its proper divisors (1).

101551221271 is an equidigital number, since it uses as much as digits as its factorization.

101551221271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 28.

Adding to 101551221271 its reverse (172122155101), we get a palindrome (273673376372).

The spelling of 101551221271 in words is "one hundred one billion, five hundred fifty-one million, two hundred twenty-one thousand, two hundred seventy-one".