211220121022222 has 16 divisors (see below), whose sum is σ = 341201992616352. Its totient is φ = 97486135800480.

The previous prime is 211220121022217. The next prime is 211220121022223. The reversal of 211220121022222 is 222220121022112.

It is a super-2 number, since 2×211220121022222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220121022193 and 211220121022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220121022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47640183 + ... + 51884749.

It is an arithmetic number, because the mean of its divisors is an integer number (21325124538522).

Almost surely, 2^{211220121022222} is an apocalyptic number.

211220121022222 is a deficient number, since it is larger than the sum of its proper divisors (129981871594130).

211220121022222 is a wasteful number, since it uses less digits than its factorization.

211220121022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158523.

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

Adding to 211220121022222 its reverse (222220121022112), we get a palindrome (433440242044334).

The spelling of 211220121022222 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-two".