211221102202 has 32 divisors (see below), whose sum is σ = 361300377600. Its totient is φ = 91736377200.

The previous prime is 211221102181. The next prime is 211221102221. The reversal of 211221102202 is 202201122112.

It is a happy number.

It is a super-2 number, since 2×211221102202² (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 15 ways as a sum of consecutive naturals, for example, 1906302 + ... + 2014057.

It is an arithmetic number, because the mean of its divisors is an integer number (11290636800).

Almost surely, 2^211221102202 is an apocalyptic number.

211221102202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211221102202 is a deficient number, since it is larger than the sum of its proper divisors (150079275398).

211221102202 is a wasteful number, since it uses less digits than its factorization.

211221102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920482.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211221102202 its reverse (202201122112), we get a palindrome (413422224314).

The spelling of 211221102202 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred two thousand, two hundred two".