101021199941 has 2 divisors, whose sum is σ = 101021199942. Its totient is φ = 101021199940.

The previous prime is 101021199931. The next prime is 101021199967. The reversal of 101021199941 is 149991120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75595302916 + 25425897025 = 274946^2 + 159455^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021199941 - 2³⁴ = 83841330757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101021199895 and 101021199904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101021199931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510599970 + 50510599971.

It is an arithmetic number, because the mean of its divisors is an integer number (50510599971).

Almost surely, 2^101021199941 is an apocalyptic number.

It is an amenable number.

101021199941 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021199941 is an equidigital number, since it uses as much as digits as its factorization.

101021199941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 101021199941 in words is "one hundred one billion, twenty-one million, one hundred ninety-nine thousand, nine hundred forty-one".