21222011221122 has 8 divisors (see below), whose sum is σ = 42444022442256. Its totient is φ = 7074003740372.

The previous prime is 21222011221091. The next prime is 21222011221153. The reversal of 21222011221122 is 22112211022212.

It is an interprime number because it is at equal distance from previous prime (21222011221091) and next prime (21222011221153).

It is a sphenic number, since it is the product of 3 distinct primes.

21222011221122 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768500935088 + ... + 1768500935099.

It is an arithmetic number, because the mean of its divisors is an integer number (5305502805282).

Almost surely, 2^{21222011221122} is an apocalyptic number.

21222011221122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21222011221122 is a wasteful number, since it uses less digits than its factorization.

21222011221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537001870192.

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

Adding to 21222011221122 its reverse (22112211022212), we get a palindrome (43334222243334).

The spelling of 21222011221122 in words is "twenty-one trillion, two hundred twenty-two billion, eleven million, two hundred twenty-one thousand, one hundred twenty-two".