12221022001949 has 2 divisors, whose sum is σ = 12221022001950. Its totient is φ = 12221022001948.

The previous prime is 12221022001931. The next prime is 12221022002003. The reversal of 12221022001949 is 94910022012221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8359286085049 + 3861735916900 = 2891243^2 + 1965130^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221022001949 - 2¹² = 12221021997853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221022001849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110511000974 + 6110511000975.

It is an arithmetic number, because the mean of its divisors is an integer number (6110511000975).

Almost surely, 2^{12221022001949} is an apocalyptic number.

It is an amenable number.

12221022001949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221022001949 is an equidigital number, since it uses as much as digits as its factorization.

12221022001949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 12221022001949 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, one thousand, nine hundred forty-nine".