221220212222022 has 32 divisors (see below), whose sum is σ = 477090699630048. Its totient is φ = 67979700980736.

The previous prime is 221220212221973. The next prime is 221220212222081. The reversal of 221220212222022 is 220222212022122.

It is a junction number, because it is equal to n+sod(n) for n = 221220212221983 and 221220212222001.

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, 1834452363 + ... + 1834572950.

It is an arithmetic number, because the mean of its divisors is an integer number (14909084363439).

Almost surely, 2^{221220212222022} is an apocalyptic number.

221220212222022 is an abundant number, since it is smaller than the sum of its proper divisors (255870487408026).

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

221220212222022 is a wasteful number, since it uses less digits than its factorization.

221220212222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669026104.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221220212222022 its reverse (220222212022122), we get a palindrome (441442424244144).

The spelling of 221220212222022 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-two thousand, twenty-two".