1012009911 has 32 divisors (see below), whose sum is σ = 1529419776. Its totient is φ = 589680000.

The previous prime is 1012009907. The next prime is 1012009919. The reversal of 1012009911 is 1199002101.

It is not a de Polignac number, because 1012009911 - 2² = 1012009907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012009919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157461 + ... + 163761.

It is an arithmetic number, because the mean of its divisors is an integer number (47794368).

Almost surely, 2^1012009911 is an apocalyptic number.

1012009911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012009911 is a deficient number, since it is larger than the sum of its proper divisors (517409865).

1012009911 is a wasteful number, since it uses less digits than its factorization.

1012009911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6503.

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 1012009911 is about 31812.1032156002. The cubic root of 1012009911 is about 1003.9873833089.

It can be divided in two parts, 101200 and 9911, that added together give a palindrome (111111).

The spelling of 1012009911 in words is "one billion, twelve million, nine thousand, nine hundred eleven".