11001212031 has 16 divisors (see below), whose sum is σ = 15230527200. Its totient is φ = 7054900608.

The previous prime is 11001212011. The next prime is 11001212081. The reversal of 11001212031 is 13021210011.

It is not a de Polignac number, because 11001212031 - 2⁵ = 11001211999 is a prime.

It is a super-2 number, since 2×11001212031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11001211998 and 11001212016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001212011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211636 + ... + 258441.

It is an arithmetic number, because the mean of its divisors is an integer number (951907950).

Almost surely, 2^11001212031 is an apocalyptic number.

11001212031 is a deficient number, since it is larger than the sum of its proper divisors (4229315169).

11001212031 is a wasteful number, since it uses less digits than its factorization.

11001212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470378.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11001212031 its reverse (13021210011), we get a palindrome (24022422042).

The spelling of 11001212031 in words is "eleven billion, one million, two hundred twelve thousand, thirty-one".