211020222222 has 16 divisors (see below), whose sum is σ = 468933827280. Its totient is φ = 70340074056.

The previous prime is 211020222197. The next prime is 211020222229. The reversal of 211020222222 is 222222020112.

It is a Harshad number since it is a multiple of its sum of digits (18).

211020222222 is a modest number, since divided by 222222 gives 211020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 211020222195 and 211020222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020222229) 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, 1953890893 + ... + 1953891000.

It is an arithmetic number, because the mean of its divisors is an integer number (29308364205).

Almost surely, 2^211020222222 is an apocalyptic number.

211020222222 is an abundant number, since it is smaller than the sum of its proper divisors (257913605058).

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

211020222222 is a wasteful number, since it uses less digits than its factorization.

211020222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907781904 (or 3907781898 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 211020222222 its reverse (222222020112), we get a palindrome (433242242334).

The spelling of 211020222222 in words is "two hundred eleven billion, twenty million, two hundred twenty-two thousand, two hundred twenty-two".