1151021212 has 18 divisors (see below), whose sum is σ = 2214052064. Its totient is φ = 523191240.

The previous prime is 1151021203. The next prime is 1151021213. The reversal of 1151021212 is 2121201511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151021213) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1188588 + ... + 1189555.

Almost surely, 2^1151021212 is an apocalyptic number.

It is an amenable number.

1151021212 is a deficient number, since it is larger than the sum of its proper divisors (1063030852).

1151021212 is a wasteful number, since it uses less digits than its factorization.

1151021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378169 (or 2378156 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1151021212 is about 33926.7035239205. The cubic root of 1151021212 is about 1047.9995811723. Note that the first 3 decimals are identical.

Adding to 1151021212 its reverse (2121201511), we get a palindrome (3272222723).

The spelling of 1151021212 in words is "one billion, one hundred fifty-one million, twenty-one thousand, two hundred twelve".