211242243020 has 24 divisors (see below), whose sum is σ = 443623319664. Its totient is φ = 84494114496.

The previous prime is 211242243019. The next prime is 211242243103. The reversal of 211242243020 is 20342242112.

It is a super-2 number, since 2×211242243020² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515147 + ... + 829373.

It is an arithmetic number, because the mean of its divisors is an integer number (18484304986).

Almost surely, 2^211242243020 is an apocalyptic number.

211242243020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211242243020 is an abundant number, since it is smaller than the sum of its proper divisors (232381076644).

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

211242243020 is a wasteful number, since it uses less digits than its factorization.

211242243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347849 (or 347847 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 211242243020 its reverse (20342242112), we get a palindrome (231584485132).

The spelling of 211242243020 in words is "two hundred eleven billion, two hundred forty-two million, two hundred forty-three thousand, twenty".