211421034330 has 64 divisors (see below), whose sum is σ = 554853891456. Its totient is φ = 51131808000.

The previous prime is 211421034311. The next prime is 211421034389. The reversal of 211421034330 is 33430124112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211421034330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621961 + ... + 899820.

It is an arithmetic number, because the mean of its divisors is an integer number (8669592054).

Almost surely, 2^211421034330 is an apocalyptic number.

211421034330 is an abundant number, since it is smaller than the sum of its proper divisors (343432857126).

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

211421034330 is a wasteful number, since it uses less digits than its factorization.

211421034330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522223.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 211421034330 its reverse (33430124112), we get a palindrome (244851158442).

The spelling of 211421034330 in words is "two hundred eleven billion, four hundred twenty-one million, thirty-four thousand, three hundred thirty".