21122000012118 has 32 divisors (see below), whose sum is σ = 42480243210240. Its totient is φ = 7001318971040.

The previous prime is 21122000012117. The next prime is 21122000012143. The reversal of 21122000012118 is 81121000022112.

It is a super-2 number, since 2×21122000012118² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122000012094 and 21122000012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122000012117) 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, 38505 + ... + 6499652.

It is an arithmetic number, because the mean of its divisors is an integer number (1327507600320).

Almost surely, 2^{21122000012118} is an apocalyptic number.

21122000012118 is an abundant number, since it is smaller than the sum of its proper divisors (21358243198122).

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

21122000012118 is a wasteful number, since it uses less digits than its factorization.

21122000012118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6541172.

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 21122000012118 in words is "twenty-one trillion, one hundred twenty-two billion, twelve thousand, one hundred eighteen".