101102201121991 has 2 divisors, whose sum is σ = 101102201121992. Its totient is φ = 101102201121990.

The previous prime is 101102201121973. The next prime is 101102201122001. The reversal of 101102201121991 is 199121102201101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101102201121991 - 2¹⁹ = 101102200597703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101102201131991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50551100560995 + 50551100560996.

It is an arithmetic number, because the mean of its divisors is an integer number (50551100560996).

Almost surely, 2^{101102201121991} is an apocalyptic number.

101102201121991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101102201121991 is an equidigital number, since it uses as much as digits as its factorization.

101102201121991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 101102201121991 in words is "one hundred one trillion, one hundred two billion, two hundred one million, one hundred twenty-one thousand, nine hundred ninety-one".