211221311022030 has 64 divisors (see below), whose sum is σ = 523389767712768. Its totient is φ = 54497683380480.

The previous prime is 211221311022023. The next prime is 211221311022053. The reversal of 211221311022030 is 30220113122112.

It is a super-2 number, since 2×211221311022030² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221311021988 and 211221311022006.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 18410382 + ... + 27593201.

It is an arithmetic number, because the mean of its divisors is an integer number (8177965120512).

Almost surely, 2^{211221311022030} is an apocalyptic number.

211221311022030 is an abundant number, since it is smaller than the sum of its proper divisors (312168456690738).

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

211221311022030 is a wasteful number, since it uses less digits than its factorization.

211221311022030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46008561.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211221311022030 its reverse (30220113122112), we get a palindrome (241441424144142).

The spelling of 211221311022030 in words is "two hundred eleven trillion, two hundred twenty-one billion, three hundred eleven million, twenty-two thousand, thirty".