211020030020 has 12 divisors (see below), whose sum is σ = 443142063084. Its totient is φ = 84408012000.

The previous prime is 211020030017. The next prime is 211020030043. The reversal of 211020030020 is 20030020112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46904297476 + 164115732544 = 216574^2 + 405112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211020029983 and 211020030010.

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, 5275500731 + ... + 5275500770.

It is an arithmetic number, because the mean of its divisors is an integer number (36928505257).

Almost surely, 2^211020030020 is an apocalyptic number.

211020030020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020030020 is an abundant number, since it is smaller than the sum of its proper divisors (232122033064).

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

211020030020 is a wasteful number, since it uses less digits than its factorization.

211020030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551001510 (or 10551001508 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 211020030020 its reverse (20030020112), we get a palindrome (231050050132).

The spelling of 211020030020 in words is "two hundred eleven billion, twenty million, thirty thousand, twenty".