221212200112022 has 16 divisors (see below), whose sum is σ = 379224758575872. Its totient is φ = 94804267594920.

The previous prime is 221212200111967. The next prime is 221212200112037. The reversal of 221212200112022 is 220211002212122.

It is a super-2 number, since 2×221212200112022² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221212200111985 and 221212200112003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78654068 + ... + 81417975.

It is an arithmetic number, because the mean of its divisors is an integer number (23701547410992).

Almost surely, 2^{221212200112022} is an apocalyptic number.

221212200112022 is a deficient number, since it is larger than the sum of its proper divisors (158012558463850).

221212200112022 is a wasteful number, since it uses less digits than its factorization.

221212200112022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160170763.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221212200112022 its reverse (220211002212122), we get a palindrome (441423202324144).

The spelling of 221212200112022 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred million, one hundred twelve thousand, twenty-two".