211221111102122 has 16 divisors (see below), whose sum is σ = 345647367158400. Its totient is φ = 96006034367040.

The previous prime is 211221111102119. The next prime is 211221111102139. The reversal of 211221111102122 is 221201111122112.

It is a happy number.

It is a super-2 number, since 2×211221111102122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221111102094 and 211221111102103.

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, 177472847 + ... + 178659042.

It is an arithmetic number, because the mean of its divisors is an integer number (21602960447400).

Almost surely, 2^{211221111102122} is an apocalyptic number.

211221111102122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211221111102122 is a deficient number, since it is larger than the sum of its proper divisors (134426256056278).

211221111102122 is a wasteful number, since it uses less digits than its factorization.

211221111102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356158861.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211221111102122 its reverse (221201111122112), we get a palindrome (432422222224234).

The spelling of 211221111102122 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, one hundred twenty-two".