1211012441 has 2 divisors, whose sum is σ = 1211012442. Its totient is φ = 1211012440.

The previous prime is 1211012401. The next prime is 1211012461. The reversal of 1211012441 is 1442101121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009968400 + 201044041 = 31780^2 + 14179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211012441 is a prime.

It is a super-2 number, since 2×1211012441² = 2933102264513556962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1211012401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605506220 + 605506221.

It is an arithmetic number, because the mean of its divisors is an integer number (605506221).

Almost surely, 2^1211012441 is an apocalyptic number.

It is an amenable number.

1211012441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211012441 is an equidigital number, since it uses as much as digits as its factorization.

1211012441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1211012441 is about 34799.6040351036. The cubic root of 1211012441 is about 1065.8993603561.

Adding to 1211012441 its reverse (1442101121), we get a palindrome (2653113562).

The spelling of 1211012441 in words is "one billion, two hundred eleven million, twelve thousand, four hundred forty-one".