211000201220 has 24 divisors (see below), whose sum is σ = 449341276608. Its totient is φ = 83211346400.

The previous prime is 211000201219. The next prime is 211000201259. The reversal of 211000201220 is 22102000112.

It is a happy number.

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, 74294426 + ... + 74297265.

It is an arithmetic number, because the mean of its divisors is an integer number (18722553192).

Almost surely, 2^211000201220 is an apocalyptic number.

211000201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000201220 is an abundant number, since it is smaller than the sum of its proper divisors (238341075388).

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

211000201220 is a wasteful number, since it uses less digits than its factorization.

211000201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148591771 (or 148591769 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211000201220 its reverse (22102000112), we get a palindrome (233102201332).

The spelling of 211000201220 in words is "two hundred eleven billion, two hundred one thousand, two hundred twenty".