211210120011220 has 96 divisors (see below), whose sum is σ = 504906325862400. Its totient is φ = 73463572997760.

The previous prime is 211210120011179. The next prime is 211210120011223. The reversal of 211210120011220 is 22110021012112.

It is a junction number, because it is equal to n+sod(n) for n = 211210120011194 and 211210120011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210120011223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617650009 + ... + 617991871.

It is an arithmetic number, because the mean of its divisors is an integer number (5259440894400).

Almost surely, 2^{211210120011220} is an apocalyptic number.

211210120011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210120011220 is an abundant number, since it is smaller than the sum of its proper divisors (293696205851180).

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

211210120011220 is a wasteful number, since it uses less digits than its factorization.

211210120011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464005 (or 464003 counting only the distinct ones).

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

Adding to 211210120011220 its reverse (22110021012112), we get a palindrome (233320141023332).

The spelling of 211210120011220 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty million, eleven thousand, two hundred twenty".