100011221212011 has 16 divisors (see below), whose sum is σ = 136952978865408. Its totient is φ = 64871823304800.

The previous prime is 100011221212009. The next prime is 100011221212013. The reversal of 100011221212011 is 110212122110001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100011221212009) and next prime (100011221212013).

It is not a de Polignac number, because 100011221212011 - 2¹ = 100011221212009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100011221212013) 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, 21502696 + ... + 25736906.

It is an arithmetic number, because the mean of its divisors is an integer number (8559561179088).

Almost surely, 2^{100011221212011} is an apocalyptic number.

100011221212011 is a deficient number, since it is larger than the sum of its proper divisors (36941757653397).

100011221212011 is a wasteful number, since it uses less digits than its factorization.

100011221212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447042.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100011221212011 its reverse (110212122110001), we get a palindrome (210223343322012).

The spelling of 100011221212011 in words is "one hundred trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, eleven".