10201111212222 has 64 divisors (see below), whose sum is σ = 26539476364800. Its totient is φ = 2843515316160.

The previous prime is 10201111212217. The next prime is 10201111212233. The reversal of 10201111212222 is 22221211110201.

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 = 10201111212195 and 10201111212204.

It is a congruent number.

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, 329095072 + ... + 329126067.

It is an arithmetic number, because the mean of its divisors is an integer number (414679318200).

Almost surely, 2^{10201111212222} is an apocalyptic number.

10201111212222 is an abundant number, since it is smaller than the sum of its proper divisors (16338365152578).

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

10201111212222 is a wasteful number, since it uses less digits than its factorization.

10201111212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658221198 (or 658221192 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10201111212222 its reverse (22221211110201), we get a palindrome (32422322322423).

The spelling of 10201111212222 in words is "ten trillion, two hundred one billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-two".