22001012222222 has 32 divisors (see below), whose sum is σ = 36769435121664. Its totient is φ = 9787208896800.

The previous prime is 22001012222221. The next prime is 22001012222257. The reversal of 22001012222222 is 22222221010022.

It is a junction number, because it is equal to n+sod(n) for n = 22001012222194 and 22001012222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001012222221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21221147 + ... + 22233737.

It is an arithmetic number, because the mean of its divisors is an integer number (1149044847552).

Almost surely, 2^{22001012222222} is an apocalyptic number.

22001012222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22001012222222 is a deficient number, since it is larger than the sum of its proper divisors (14768422899442).

22001012222222 is a wasteful number, since it uses less digits than its factorization.

22001012222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033664.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22001012222222 its reverse (22222221010022), we get a palindrome (44223233232244).

The spelling of 22001012222222 in words is "twenty-two trillion, one billion, twelve million, two hundred twenty-two thousand, two hundred twenty-two".