2212021012122 has 96 divisors (see below), whose sum is σ = 5321885587200. Its totient is φ = 660458810880.

The previous prime is 2212021012087. The next prime is 2212021012141. The reversal of 2212021012122 is 2212101202122.

It is a happy number.

2212021012122 is a `hidden beast` number, since 221 + 20 + 210 + 1 + 212 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2212021012095 and 2212021012104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 610872 + ... + 2190252.

It is an arithmetic number, because the mean of its divisors is an integer number (55436308200).

Almost surely, 2^{2212021012122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212021012122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2660942793600).

2212021012122 is an abundant number, since it is smaller than the sum of its proper divisors (3109864575078).

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

2212021012122 is a wasteful number, since it uses less digits than its factorization.

2212021012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579628 (or 1579625 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212021012122 its reverse (2212101202122), we get a palindrome (4424122214244).

The spelling of 2212021012122 in words is "two trillion, two hundred twelve billion, twenty-one million, twelve thousand, one hundred twenty-two".