220021211222222 has 32 divisors (see below), whose sum is σ = 349174163923200. Its totient is φ = 103690239239808.

The previous prime is 220021211222171. The next prime is 220021211222237. The reversal of 220021211222222 is 222222112120022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12716828 + ... + 24530799.

It is an arithmetic number, because the mean of its divisors is an integer number (10911692622600).

Almost surely, 2^{220021211222222} is an apocalyptic number.

220021211222222 is a deficient number, since it is larger than the sum of its proper divisors (129152952700978).

220021211222222 is a wasteful number, since it uses less digits than its factorization.

220021211222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37248440.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 220021211222222 its reverse (222222112120022), we get a palindrome (442243323342244).

The spelling of 220021211222222 in words is "two hundred twenty trillion, twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".