1121021123 has 8 divisors (see below), whose sum is σ = 1187259120. Its totient is φ = 1054816000.

The previous prime is 1121021117. The next prime is 1121021149. The reversal of 1121021123 is 3211201211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121021123 - 2⁸ = 1121020867 is a prime.

It is a super-2 number, since 2×1121021123² = 2513376716424362258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121021098 and 1121021107.

It is not an unprimeable number, because it can be changed into a prime (1121011123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114308 + ... + 123726.

It is an arithmetic number, because the mean of its divisors is an integer number (148407390).

Almost surely, 2^1121021123 is an apocalyptic number.

1121021123 is a deficient number, since it is larger than the sum of its proper divisors (66237997).

1121021123 is an equidigital number, since it uses as much as digits as its factorization.

1121021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16437.

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

The square root of 1121021123 is about 33481.6535284624. The cubic root of 1121021123 is about 1038.8143301684.

Adding to 1121021123 its reverse (3211201211), we get a palindrome (4332222334).

The spelling of 1121021123 in words is "one billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-three".