1011212120 has 32 divisors (see below), whose sum is σ = 2276406720. Its totient is φ = 404275200.

The previous prime is 1011212117. The next prime is 1011212143. The reversal of 1011212120 is 212121101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88664 + ... + 99416.

It is an arithmetic number, because the mean of its divisors is an integer number (71137710).

Almost surely, 2^1011212120 is an apocalyptic number.

1011212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011212120 is an abundant number, since it is smaller than the sum of its proper divisors (1265194600).

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

1011212120 is a wasteful number, since it uses less digits than its factorization.

1011212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13115 (or 13111 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1011212120 is about 31799.5616321986. The cubic root of 1011212120 is about 1003.7234917347.

Adding to 1011212120 its reverse (212121101), we get a palindrome (1223333221).

The spelling of 1011212120 in words is "one billion, eleven million, two hundred twelve thousand, one hundred twenty".