220001211122 has 64 divisors (see below), whose sum is σ = 431042273280. Its totient is φ = 81711590400.

The previous prime is 220001211061. The next prime is 220001211211. The reversal of 220001211122 is 221112100022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 220001211097 and 220001211106.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 24047 + ... + 663762.

It is an arithmetic number, because the mean of its divisors is an integer number (6735035520).

Almost surely, 2^220001211122 is an apocalyptic number.

220001211122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220001211122 is a deficient number, since it is larger than the sum of its proper divisors (211041062158).

220001211122 is a wasteful number, since it uses less digits than its factorization.

220001211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687927.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220001211122 its reverse (221112100022), we get a palindrome (441113311144).

Subtracting 220001211122 from its reverse (221112100022), we obtain a square (1110888900 = 33330²).

The spelling of 220001211122 in words is "two hundred twenty billion, one million, two hundred eleven thousand, one hundred twenty-two".