21122002112222 has 16 divisors (see below), whose sum is σ = 34563471267312. Its totient is φ = 9600855861120.

The previous prime is 21122002112219. The next prime is 21122002112231. The reversal of 21122002112222 is 22221120022112.

It is a super-2 number, since 2×21122002112222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122002112194 and 21122002112203.

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, 1416488 + ... + 6652100.

It is an arithmetic number, because the mean of its divisors is an integer number (2160216954207).

Almost surely, 2^{21122002112222} is an apocalyptic number.

21122002112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122002112222 is a deficient number, since it is larger than the sum of its proper divisors (13441469155090).

21122002112222 is a wasteful number, since it uses less digits than its factorization.

21122002112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419003.

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

Adding to 21122002112222 its reverse (22221120022112), we get a palindrome (43343122134334).

The spelling of 21122002112222 in words is "twenty-one trillion, one hundred twenty-two billion, two million, one hundred twelve thousand, two hundred twenty-two".