11031212101 has 16 divisors (see below), whose sum is σ = 13579501824. Its totient is φ = 8726304384.

The previous prime is 11031212099. The next prime is 11031212107. The reversal of 11031212101 is 10121213011.

It is a happy number.

It is not a de Polignac number, because 11031212101 - 2¹ = 11031212099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031212107) 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 15 ways as a sum of consecutive naturals, for example, 693105 + ... + 708841.

It is an arithmetic number, because the mean of its divisors is an integer number (848718864).

Almost surely, 2^11031212101 is an apocalyptic number.

It is an amenable number.

11031212101 is a deficient number, since it is larger than the sum of its proper divisors (2548289723).

11031212101 is a wasteful number, since it uses less digits than its factorization.

11031212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23460.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11031212101 its reverse (10121213011), we get a palindrome (21152425112).

The spelling of 11031212101 in words is "eleven billion, thirty-one million, two hundred twelve thousand, one hundred one".