211142023021 has 8 divisors (see below), whose sum is σ = 211925877920. Its totient is φ = 210358434672.

The previous prime is 211142023003. The next prime is 211142023069. The reversal of 211142023021 is 120320241112.

211142023021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 211142023021 - 2⁵ = 211142022989 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 211142023021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211142023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597366 + ... + 1724488.

It is an arithmetic number, because the mean of its divisors is an integer number (26490734740).

Almost surely, 2^211142023021 is an apocalyptic number.

It is an amenable number.

211142023021 is a deficient number, since it is larger than the sum of its proper divisors (783854899).

211142023021 is a wasteful number, since it uses less digits than its factorization.

211142023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133275.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211142023021 its reverse (120320241112), we get a palindrome (331462264133).

The spelling of 211142023021 in words is "two hundred eleven billion, one hundred forty-two million, twenty-three thousand, twenty-one".