211203241020 has 336 divisors, whose sum is σ = 728407028160. Its totient is φ = 51178272768.

The previous prime is 211203240979. The next prime is 211203241043. The reversal of 211203241020 is 20142302112.

It is a happy number.

211203241020 is a `hidden beast` number, since 211 + 20 + 3 + 2 + 410 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211203240984 and 211203241002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 7173249 + ... + 7202631.

It is an arithmetic number, because the mean of its divisors is an integer number (2167878060).

Almost surely, 2^211203241020 is an apocalyptic number.

211203241020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211203241020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364203514080).

211203241020 is an abundant number, since it is smaller than the sum of its proper divisors (517203787140).

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

211203241020 is a wasteful number, since it uses less digits than its factorization.

211203241020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29456 (or 29439 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211203241020 its reverse (20142302112), we get a palindrome (231345543132).

The spelling of 211203241020 in words is "two hundred eleven billion, two hundred three million, two hundred forty-one thousand, twenty".