10101011221949 has 2 divisors, whose sum is σ = 10101011221950. Its totient is φ = 10101011221948.

The previous prime is 10101011221937. The next prime is 10101011222059. The reversal of 10101011221949 is 94912211010101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6618178146724 + 3482833075225 = 2572582^2 + 1866235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101011221949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101011221549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050505610974 + 5050505610975.

It is an arithmetic number, because the mean of its divisors is an integer number (5050505610975).

Almost surely, 2^{10101011221949} is an apocalyptic number.

It is an amenable number.

10101011221949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101011221949 is an equidigital number, since it uses as much as digits as its factorization.

10101011221949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 10101011221949 in words is "ten trillion, one hundred one billion, eleven million, two hundred twenty-one thousand, nine hundred forty-nine".