211421230434 has 32 divisors (see below), whose sum is σ = 469946232000. Its totient is φ = 70455552192.

The previous prime is 211421230417. The next prime is 211421230459. The reversal of 211421230434 is 434032124112.

211421230434 is a `hidden beast` number, since 2 + 1 + 1 + 421 + 230 + 4 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 211421230398 and 211421230407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293364 + ... + 713375.

It is an arithmetic number, because the mean of its divisors is an integer number (14685819750).

Almost surely, 2^211421230434 is an apocalyptic number.

211421230434 is an abundant number, since it is smaller than the sum of its proper divisors (258525001566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211421230434 is a wasteful number, since it uses less digits than its factorization.

211421230434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010639 (or 1010633 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 211421230434 its reverse (434032124112), we get a palindrome (645453354546).

The spelling of 211421230434 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred thirty thousand, four hundred thirty-four".