1141222021 has 4 divisors (see below), whose sum is σ = 1167762112. Its totient is φ = 1114681932.

The previous prime is 1141222013. The next prime is 1141222031. The reversal of 1141222021 is 1202221411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1141222021 - 2³ = 1141222013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1141221986 and 1141222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13269981 + ... + 13270066.

It is an arithmetic number, because the mean of its divisors is an integer number (291940528).

Almost surely, 2^1141222021 is an apocalyptic number.

It is an amenable number.

1141222021 is a deficient number, since it is larger than the sum of its proper divisors (26540091).

1141222021 is an equidigital number, since it uses as much as digits as its factorization.

1141222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26540090.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1141222021 is about 33781.9777544181. The cubic root of 1141222021 is about 1045.0170616019.

Adding to 1141222021 its reverse (1202221411), we get a palindrome (2343443432).

It can be divided in two parts, 11412 and 22021, that added together give a palindrome (33433).

The spelling of 1141222021 in words is "one billion, one hundred forty-one million, two hundred twenty-two thousand, twenty-one".