211002021020 has 48 divisors (see below), whose sum is σ = 507341085888. Its totient is φ = 72209802240.

The previous prime is 211002021001. The next prime is 211002021023. The reversal of 211002021020 is 20120200112.

It is a happy number.

211002021020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211002020992 and 211002021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002021023) 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, 1317197 + ... + 1468676.

It is an arithmetic number, because the mean of its divisors is an integer number (10569605956).

Almost surely, 2^211002021020 is an apocalyptic number.

211002021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211002021020 is an abundant number, since it is smaller than the sum of its proper divisors (296339064868).

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

211002021020 is a wasteful number, since it uses less digits than its factorization.

211002021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786430 (or 2786428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211002021020 its reverse (20120200112), we get a palindrome (231122221132).

The spelling of 211002021020 in words is "two hundred eleven billion, two million, twenty-one thousand, twenty".