211002020 has 12 divisors (see below), whose sum is σ = 443104284. Its totient is φ = 84400800.

The previous prime is 211002013. The next prime is 211002037. The reversal of 211002020 is 20200112.

It can be written as a sum of positive squares in 2 ways, for example, as 107288164 + 103713856 = 10358^2 + 10184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211001989 and 211002007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275031 + ... + 5275070.

It is an arithmetic number, because the mean of its divisors is an integer number (36925357).

Almost surely, 2^211002020 is an apocalyptic number.

211002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211002020 is an abundant number, since it is smaller than the sum of its proper divisors (232102264).

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

211002020 is a wasteful number, since it uses less digits than its factorization.

211002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10550110 (or 10550108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 211002020 is about 14525.9085774350. The cubic root of 211002020 is about 595.3360811104.

Adding to 211002020 its reverse (20200112), we get a palindrome (231202132).

The spelling of 211002020 in words is "two hundred eleven million, two thousand, twenty".