211144024220 has 24 divisors (see below), whose sum is σ = 466739422800. Its totient is φ = 80012472192.

The previous prime is 211144024207. The next prime is 211144024229. The reversal of 211144024220 is 22420441112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211144024229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277820705 + ... + 277821464.

It is an arithmetic number, because the mean of its divisors is an integer number (19447475950).

Almost surely, 2^211144024220 is an apocalyptic number.

211144024220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211144024220 is an abundant number, since it is smaller than the sum of its proper divisors (255595398580).

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

211144024220 is a wasteful number, since it uses less digits than its factorization.

211144024220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555642197 (or 555642195 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 211144024220 its reverse (22420441112), we get a palindrome (233564465332).

The spelling of 211144024220 in words is "two hundred eleven billion, one hundred forty-four million, twenty-four thousand, two hundred twenty".