1212973011 has 24 divisors (see below), whose sum is σ = 1846031616. Its totient is φ = 765966960.

The previous prime is 1212973009. The next prime is 1212973019. The reversal of 1212973011 is 1103792121.

It is not a de Polignac number, because 1212973011 - 2¹ = 1212973009 is a prime.

It is a super-2 number, since 2×1212973011² = 2942607050828812242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212973019) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7125 + ... + 49766.

It is an arithmetic number, because the mean of its divisors is an integer number (76917984).

Almost surely, 2^1212973011 is an apocalyptic number.

1212973011 is a deficient number, since it is larger than the sum of its proper divisors (633058605).

1212973011 is a wasteful number, since it uses less digits than its factorization.

1212973011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57023 (or 57020 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1212973011 is about 34827.7620728062. The cubic root of 1212973011 is about 1066.4742632242.

The spelling of 1212973011 in words is "one billion, two hundred twelve million, nine hundred seventy-three thousand, eleven".