1121430220 has 24 divisors (see below), whose sum is σ = 2369458224. Its totient is φ = 445818816.

The previous prime is 1121430209. The next prime is 1121430221. The reversal of 1121430220 is 220341211.

It is a junction number, because it is equal to n+sod(n) for n = 1121430194 and 1121430203.

It is not an unprimeable number, because it can be changed into a prime (1121430221) 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, 168739 + ... + 175258.

It is an arithmetic number, because the mean of its divisors is an integer number (98727426).

Almost surely, 2^1121430220 is an apocalyptic number.

1121430220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121430220 is an abundant number, since it is smaller than the sum of its proper divisors (1248028004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121430220 is a wasteful number, since it uses less digits than its factorization.

1121430220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344169 (or 344167 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1121430220 is about 33487.7622423476. The cubic root of 1121430220 is about 1038.9406804907.

Adding to 1121430220 its reverse (220341211), we get a palindrome (1341771431).

The spelling of 1121430220 in words is "one billion, one hundred twenty-one million, four hundred thirty thousand, two hundred twenty".