21112212001011 has 8 divisors (see below), whose sum is σ = 28230738815424. Its totient is φ = 14034246593640.

The previous prime is 21112212001003. The next prime is 21112212001037. The reversal of 21112212001011 is 11010021221112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21112212001011 - 2³ = 21112212001003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112212001051) 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 7 ways as a sum of consecutive naturals, for example, 10140350545 + ... + 10140352626.

It is an arithmetic number, because the mean of its divisors is an integer number (3528842351928).

Almost surely, 2^{21112212001011} is an apocalyptic number.

21112212001011 is a deficient number, since it is larger than the sum of its proper divisors (7118526814413).

21112212001011 is a wasteful number, since it uses less digits than its factorization.

21112212001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20280703521.

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

Adding to 21112212001011 its reverse (11010021221112), we get a palindrome (32122233222123).

The spelling of 21112212001011 in words is "twenty-one trillion, one hundred twelve billion, two hundred twelve million, one thousand, eleven".