211220343030 has 32 divisors (see below), whose sum is σ = 513036405504. Its totient is φ = 55646804576.

The previous prime is 211220343017. The next prime is 211220343053. The reversal of 211220343030 is 30343022112.

211220343030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211220343030² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220342988 and 211220343006.

It is a congruent number.

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, 42411234 + ... + 42416213.

It is an arithmetic number, because the mean of its divisors is an integer number (16032387672).

Almost surely, 2^211220343030 is an apocalyptic number.

211220343030 is an abundant number, since it is smaller than the sum of its proper divisors (301816062474).

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

211220343030 is a wasteful number, since it uses less digits than its factorization.

211220343030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84827540.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 211220343030 its reverse (30343022112), we get a palindrome (241563365142).

The spelling of 211220343030 in words is "two hundred eleven billion, two hundred twenty million, three hundred forty-three thousand, thirty".