1141111021 has 2 divisors, whose sum is σ = 1141111022. Its totient is φ = 1141111020.

The previous prime is 1141110989. The next prime is 1141111033. The reversal of 1141111021 is 1201111411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974313796 + 166797225 = 31214^2 + 12915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141111021 - 2⁵ = 1141110989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1141110992 and 1141111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1141111051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570555510 + 570555511.

It is an arithmetic number, because the mean of its divisors is an integer number (570555511).

Almost surely, 2^1141111021 is an apocalyptic number.

It is an amenable number.

1141111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141111021 is an equidigital number, since it uses as much as digits as its factorization.

1141111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

The square root of 1141111021 is about 33780.3348266414. The cubic root of 1141111021 is about 1044.9831796015.

Adding to 1141111021 its reverse (1201111411), we get a palindrome (2342222432).

The spelling of 1141111021 in words is "one billion, one hundred forty-one million, one hundred eleven thousand, twenty-one".