211212221120 has 56 divisors (see below), whose sum is σ = 505555203264. Its totient is φ = 84047118336.

The previous prime is 211212221111. The next prime is 211212221123. The reversal of 211212221120 is 21122212112.

211212221120 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 2×211212221120² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212221123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648184 + ... + 1771703.

Almost surely, 2^211212221120 is an apocalyptic number.

211212221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212221120 is an abundant number, since it is smaller than the sum of its proper divisors (294342982144).

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

211212221120 is a wasteful number, since it uses less digits than its factorization.

211212221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420097 (or 3420087 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211212221120 its reverse (21122212112), we get a palindrome (232334433232).

The spelling of 211212221120 in words is "two hundred eleven billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twenty".