22221102212122 has 16 divisors (see below), whose sum is σ = 37047875388192. Its totient is φ = 9909925514320.

The previous prime is 22221102212107. The next prime is 22221102212137. The reversal of 22221102212122 is 22121220112222.

It is an interprime number because it is at equal distance from previous prime (22221102212107) and next prime (22221102212137).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22221102212093 and 22221102212102.

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, 9528773368 + ... + 9528775699.

It is an arithmetic number, because the mean of its divisors is an integer number (2315492211762).

Almost surely, 2^{22221102212122} is an apocalyptic number.

22221102212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221102212122 is a deficient number, since it is larger than the sum of its proper divisors (14826773176070).

22221102212122 is a wasteful number, since it uses less digits than its factorization.

22221102212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057549133.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22221102212122 its reverse (22121220112222), we get a palindrome (44342322324344).

The spelling of 22221102212122 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred two million, two hundred twelve thousand, one hundred twenty-two".