101220201122191 has 2 divisors, whose sum is σ = 101220201122192. Its totient is φ = 101220201122190.

The previous prime is 101220201122177. The next prime is 101220201122239. The reversal of 101220201122191 is 191221102022101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101220201122191 - 2²¹ = 101220199025039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220201122291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610100561095 + 50610100561096.

It is an arithmetic number, because the mean of its divisors is an integer number (50610100561096).

Almost surely, 2^{101220201122191} is an apocalyptic number.

101220201122191 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220201122191 is an equidigital number, since it uses as much as digits as its factorization.

101220201122191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 101220201122191 its reverse (191221102022101), we get a palindrome (292441303144292).

It can be divided in two parts, 10122020 and 1122191, that added together give a palindrome (11244211).

The spelling of 101220201122191 in words is "one hundred one trillion, two hundred twenty billion, two hundred one million, one hundred twenty-two thousand, one hundred ninety-one".