1001212212011 has 12 divisors (see below), whose sum is σ = 1118547075072. Its totient is φ = 895271718000.

The previous prime is 1001212211929. The next prime is 1001212212041. The reversal of 1001212212011 is 1102122121001.

It is not a de Polignac number, because 1001212212011 - 2¹⁸ = 1001211949867 is a prime.

It is a super-2 number, since 2×1001212212011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001212212041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67816235 + ... + 67830996.

It is an arithmetic number, because the mean of its divisors is an integer number (93212256256).

Almost surely, 2^{1001212212011} is an apocalyptic number.

1001212212011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001212212011 is a deficient number, since it is larger than the sum of its proper divisors (117334863061).

1001212212011 is a wasteful number, since it uses less digits than its factorization.

1001212212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135647314 (or 135647303 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001212212011 its reverse (1102122121001), we get a palindrome (2103334333012).

It can be divided in two parts, 100121 and 2212011, that added together give a palindrome (2312132).

The spelling of 1001212212011 in words is "one trillion, one billion, two hundred twelve million, two hundred twelve thousand, eleven".