1019221961141 has 2 divisors, whose sum is σ = 1019221961142. Its totient is φ = 1019221961140.

The previous prime is 1019221961101. The next prime is 1019221961209. The reversal of 1019221961141 is 1411691229101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976003709041 + 43218252100 = 987929^2 + 207890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019221961141 - 2¹⁰ = 1019221960117 is a prime.

It is a super-2 number, since 2×1019221961141² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1019221961095 and 1019221961104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1019221961101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509610980570 + 509610980571.

It is an arithmetic number, because the mean of its divisors is an integer number (509610980571).

Almost surely, 2^{1019221961141} is an apocalyptic number.

It is an amenable number.

1019221961141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019221961141 is an equidigital number, since it uses as much as digits as its factorization.

1019221961141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 38.

The spelling of 1019221961141 in words is "one trillion, nineteen billion, two hundred twenty-one million, nine hundred sixty-one thousand, one hundred forty-one".