211210020221020 has 24 divisors (see below), whose sum is σ = 447932537938368. Its totient is φ = 83647532760000.

The previous prime is 211210020221017. The next prime is 211210020221021. The reversal of 211210020221020 is 20122020012112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211210020220985 and 211210020221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210020221021) 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, 52279705956 + ... + 52279709995.

It is an arithmetic number, because the mean of its divisors is an integer number (18663855747432).

Almost surely, 2^{211210020221020} is an apocalyptic number.

211210020221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210020221020 is an abundant number, since it is smaller than the sum of its proper divisors (236722517717348).

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

211210020221020 is a wasteful number, since it uses less digits than its factorization.

211210020221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104559416061 (or 104559416059 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211210020221020 its reverse (20122020012112), we get a palindrome (231332040233132).

The spelling of 211210020221020 in words is "two hundred eleven trillion, two hundred ten billion, twenty million, two hundred twenty-one thousand, twenty".