211220222022 has 40 divisors (see below), whose sum is σ = 493867580976. Its totient is φ = 67345576848.

The previous prime is 211220222021. The next prime is 211220222023. The reversal of 211220222022 is 220222022112.

It is an interprime number because it is at equal distance from previous prime (211220222021) and next prime (211220222023).

It is a super-2 number, since 2×211220222022² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 211220221986 and 211220222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28340373 + ... + 28347824.

Almost surely, 2^211220222022 is an apocalyptic number.

211220222022 is an abundant number, since it is smaller than the sum of its proper divisors (282647358954).

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

211220222022 is a wasteful number, since it uses less digits than its factorization.

211220222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56688234 (or 56688225 counting only the distinct ones).

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

Adding to 211220222022 its reverse (220222022112), we get a palindrome (431442244134).

The spelling of 211220222022 in words is "two hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, twenty-two".