1121301221 has 4 divisors (see below), whose sum is σ = 1170053472. Its totient is φ = 1072548972.

The previous prime is 1121301197. The next prime is 1121301241. The reversal of 1121301221 is 1221031211.

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 not a de Polignac number, because 1121301221 - 2³⁰ = 47559397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121301196 and 1121301205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121301241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24376091 + ... + 24376136.

It is an arithmetic number, because the mean of its divisors is an integer number (292513368).

Almost surely, 2^1121301221 is an apocalyptic number.

It is an amenable number.

1121301221 is a deficient number, since it is larger than the sum of its proper divisors (48752251).

1121301221 is an equidigital number, since it uses as much as digits as its factorization.

1121301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48752250.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1121301221 is about 33485.8361251440. The cubic root of 1121301221 is about 1038.9008422420.

Adding to 1121301221 its reverse (1221031211), we get a palindrome (2342332432).

The spelling of 1121301221 in words is "one billion, one hundred twenty-one million, three hundred one thousand, two hundred twenty-one".