211210222220120 has 32 divisors (see below), whose sum is σ = 475224334516800. Its totient is φ = 84483851639808.

The previous prime is 211210222220051. The next prime is 211210222220143. The reversal of 211210222220120 is 21022222012112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211210222220092 and 211210222220101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7372097 + ... + 21835023.

It is an arithmetic number, because the mean of its divisors is an integer number (14850760453650).

Almost surely, 2^{211210222220120} is an apocalyptic number.

211210222220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210222220120 is an abundant number, since it is smaller than the sum of its proper divisors (264014112296680).

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

211210222220120 is a wasteful number, since it uses less digits than its factorization.

211210222220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14828027 (or 14828023 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211210222220120 its reverse (21022222012112), we get a palindrome (232232444232232).

The spelling of 211210222220120 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty".