211210102020 has 48 divisors (see below), whose sum is σ = 591482586240. Its totient is φ = 56313712896.

The previous prime is 211210102003. The next prime is 211210102027. The reversal of 211210102020 is 20201012112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211210101987 and 211210102005.

It is not an unprimeable number, because it can be changed into a prime (211210102027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103096 + ... + 658064.

It is an arithmetic number, because the mean of its divisors is an integer number (12322553880).

Almost surely, 2^211210102020 is an apocalyptic number.

211210102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210102020 is an abundant number, since it is smaller than the sum of its proper divisors (380272484220).

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

211210102020 is a wasteful number, since it uses less digits than its factorization.

211210102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561324 (or 561322 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211210102020 its reverse (20201012112), we get a palindrome (231411114132).

The spelling of 211210102020 in words is "two hundred eleven billion, two hundred ten million, one hundred two thousand, twenty".