211204220020 has 48 divisors (see below), whose sum is σ = 466985635200. Its totient is φ = 80015886720.

The previous prime is 211204219969. The next prime is 211204220099. The reversal of 211204220020 is 20022402112.

It is a super-3 number, since 3×211204220020³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211204219976 and 211204220003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1553961 + ... + 1684399.

It is an arithmetic number, because the mean of its divisors is an integer number (9728867400).

Almost surely, 2^211204220020 is an apocalyptic number.

211204220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211204220020 is an abundant number, since it is smaller than the sum of its proper divisors (255781415180).

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

211204220020 is a wasteful number, since it uses less digits than its factorization.

211204220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134728 (or 134726 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 211204220020 its reverse (20022402112), we get a palindrome (231226622132).

The spelling of 211204220020 in words is "two hundred eleven billion, two hundred four million, two hundred twenty thousand, twenty".