21122221201122 has 64 divisors (see below), whose sum is σ = 45837010404864. Its totient is φ = 6463452610560.

The previous prime is 21122221201111. The next prime is 21122221201141. The reversal of 21122221201122 is 22110212222112.

It is a super-2 number, since 2×21122221201122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6114079 + ... + 8923362.

It is an arithmetic number, because the mean of its divisors is an integer number (716203287576).

Almost surely, 2^{21122221201122} is an apocalyptic number.

21122221201122 is an abundant number, since it is smaller than the sum of its proper divisors (24714789203742).

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

21122221201122 is a wasteful number, since it uses less digits than its factorization.

21122221201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15037803.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21122221201122 its reverse (22110212222112), we get a palindrome (43232433423234).

The spelling of 21122221201122 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty-two".