211221122013324 has 120 divisors (see below), whose sum is σ = 582125622595440. Its totient is φ = 66599259578496.

The previous prime is 211221122013283. The next prime is 211221122013359. The reversal of 211221122013324 is 423310221122112.

211221122013324 is a `hidden beast` number, since 2 + 1 + 1 + 22 + 112 + 201 + 3 + 324 = 666.

It is a super-2 number, since 2×211221122013324² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22252279 + ... + 30292014.

It is an arithmetic number, because the mean of its divisors is an integer number (4851046854962).

Almost surely, 2^{211221122013324} is an apocalyptic number.

It is an amenable number.

211221122013324 is an abundant number, since it is smaller than the sum of its proper divisors (370904500582116).

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

211221122013324 is a wasteful number, since it uses less digits than its factorization.

211221122013324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52544981 (or 52544970 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 211221122013324 its reverse (423310221122112), we get a palindrome (634531343135436).

The spelling of 211221122013324 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, thirteen thousand, three hundred twenty-four".