211321220214 has 32 divisors (see below), whose sum is σ = 455171028480. Its totient is φ = 65019395232.

The previous prime is 211321220203. The next prime is 211321220233. The reversal of 211321220214 is 412022123112.

It is a happy number.

It is a super-2 number, since 2×211321220214² (a number of 23 digits) contains 22 as substring.

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, 3544947 + ... + 3604065.

It is an arithmetic number, because the mean of its divisors is an integer number (14224094640).

Almost surely, 2^211321220214 is an apocalyptic number.

211321220214 is an abundant number, since it is smaller than the sum of its proper divisors (243849808266).

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

211321220214 is a wasteful number, since it uses less digits than its factorization.

211321220214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104964.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211321220214 its reverse (412022123112), we get a palindrome (623343343326).

The spelling of 211321220214 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred twenty thousand, two hundred fourteen".