211430404421123 has 8 divisors (see below), whose sum is σ = 213046659967680. Its totient is φ = 209814183465640.

The previous prime is 211430404421101. The next prime is 211430404421129. The reversal of 211430404421123 is 321124404034112.

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 211430404421123 - 2²² = 211430400226819 is a prime.

It is a super-2 number, since 2×211430404421123² (a number of 29 digits) contains 22 as substring.

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 211430404421123.

It is not an unprimeable number, because it can be changed into a prime (211430404421129) 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, 3690548 + ... + 20892126.

It is an arithmetic number, because the mean of its divisors is an integer number (26630832495960).

Almost surely, 2^{211430404421123} is an apocalyptic number.

211430404421123 is a deficient number, since it is larger than the sum of its proper divisors (1616255546557).

211430404421123 is a wasteful number, since it uses less digits than its factorization.

211430404421123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17295537.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 211430404421123 its reverse (321124404034112), we get a palindrome (532554808455235).

The spelling of 211430404421123 in words is "two hundred eleven trillion, four hundred thirty billion, four hundred four million, four hundred twenty-one thousand, one hundred twenty-three".