20102212101222 has 24 divisors (see below), whose sum is σ = 43555017065976. Its totient is φ = 6700702877856.

The previous prime is 20102212101217. The next prime is 20102212101227. The reversal of 20102212101222 is 22210121220102.

It is a happy number.

20102212101222 is a `hidden beast` number, since 2 + 0 + 10 + 221 + 210 + 1 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (20102212101217) and next prime (20102212101227).

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 = 20102212101195 and 20102212101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102212101227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 850633 + ... + 6397499.

It is an arithmetic number, because the mean of its divisors is an integer number (1814792377749).

Almost surely, 2^{20102212101222} is an apocalyptic number.

20102212101222 is an abundant number, since it is smaller than the sum of its proper divisors (23452804964754).

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

20102212101222 is a wasteful number, since it uses less digits than its factorization.

20102212101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748212 (or 5748209 counting only the distinct ones).

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

Adding to 20102212101222 its reverse (22210121220102), we get a palindrome (42312333321324).

The spelling of 20102212101222 in words is "twenty trillion, one hundred two billion, two hundred twelve million, one hundred one thousand, two hundred twenty-two".