211122202122220 has 12 divisors (see below), whose sum is σ = 443356624456704. Its totient is φ = 84448880848880.

The previous prime is 211122202122211. The next prime is 211122202122229. The reversal of 211122202122220 is 22221202221112.

It is an interprime number because it is at equal distance from previous prime (211122202122211) and next prime (211122202122229).

It is a junction number, because it is equal to n+sod(n) for n = 211122202122191 and 211122202122200.

It is not an unprimeable number, because it can be changed into a prime (211122202122229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278055053036 + ... + 5278055053075.

It is an arithmetic number, because the mean of its divisors is an integer number (36946385371392).

Almost surely, 2^{211122202122220} is an apocalyptic number.

211122202122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122202122220 is an abundant number, since it is smaller than the sum of its proper divisors (232234422334484).

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

211122202122220 is a wasteful number, since it uses less digits than its factorization.

211122202122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556110106120 (or 10556110106118 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211122202122220 its reverse (22221202221112), we get a palindrome (233343404343332).

The spelling of 211122202122220 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty".