1121211930 has 32 divisors (see below), whose sum is σ = 2696779008. Its totient is φ = 298337600.

The previous prime is 1121211929. The next prime is 1121211961. The reversal of 1121211930 is 391121211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121211897 and 1121211906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26706 + ... + 54365.

It is an arithmetic number, because the mean of its divisors is an integer number (84274344).

Almost surely, 2^1121211930 is an apocalyptic number.

1121211930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121211930 is an abundant number, since it is smaller than the sum of its proper divisors (1575567078).

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

1121211930 is a wasteful number, since it uses less digits than its factorization.

1121211930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81542.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1121211930 is about 33484.5028334004. The cubic root of 1121211930 is about 1038.8732650677.

The spelling of 1121211930 in words is "one billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred thirty".