101220012021091 has 2 divisors, whose sum is σ = 101220012021092. Its totient is φ = 101220012021090.

The previous prime is 101220012020983. The next prime is 101220012021097. The reversal of 101220012021091 is 190120210022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101220012021091 - 2¹¹ = 101220012019043 is a prime.

It is not a weakly prime, because it can be changed into another prime (101220012021097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610006010545 + 50610006010546.

It is an arithmetic number, because the mean of its divisors is an integer number (50610006010546).

Almost surely, 2^{101220012021091} is an apocalyptic number.

101220012021091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220012021091 is an equidigital number, since it uses as much as digits as its factorization.

101220012021091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 101220012021091 its reverse (190120210022101), we get a palindrome (291340222043192).

The spelling of 101220012021091 in words is "one hundred one trillion, two hundred twenty billion, twelve million, twenty-one thousand, ninety-one".