211142113021 has 8 divisors (see below), whose sum is σ = 243205314560. Its totient is φ = 179553922128.

The previous prime is 211142113019. The next prime is 211142113027. The reversal of 211142113021 is 120311241112.

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

It is not a de Polignac number, because 211142113021 - 2¹ = 211142113019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211142113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211142113027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118751706 + ... + 118753483.

It is an arithmetic number, because the mean of its divisors is an integer number (30400664320).

Almost surely, 2^211142113021 is an apocalyptic number.

It is an amenable number.

211142113021 is a deficient number, since it is larger than the sum of its proper divisors (32063201539).

211142113021 is a wasteful number, since it uses less digits than its factorization.

211142113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237505323.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 211142113021 its reverse (120311241112), we get a palindrome (331453354133).

The spelling of 211142113021 in words is "two hundred eleven billion, one hundred forty-two million, one hundred thirteen thousand, twenty-one".