211210021011220 has 192 divisors, whose sum is σ = 553311219718656. Its totient is φ = 65793021419520.

The previous prime is 211210021011211. The next prime is 211210021011281. The reversal of 211210021011220 is 22110120012112.

It is a junction number, because it is equal to n+sod(n) for n = 211210021011194 and 211210021011203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34893441714 + ... + 34893447766.

It is an arithmetic number, because the mean of its divisors is an integer number (2881829269368).

Almost surely, 2^{211210021011220} is an apocalyptic number.

211210021011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210021011220 is an abundant number, since it is smaller than the sum of its proper divisors (342101198707436).

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

211210021011220 is a wasteful number, since it uses less digits than its factorization.

211210021011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15650 (or 15648 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210021011220 its reverse (22110120012112), we get a palindrome (233320141023332).

The spelling of 211210021011220 in words is "two hundred eleven trillion, two hundred ten billion, twenty-one million, eleven thousand, two hundred twenty".