10101222222 has 128 divisors (see below), whose sum is σ = 25780737024. Its totient is φ = 2567282688.

The previous prime is 10101222221. The next prime is 10101222253. The reversal of 10101222222 is 22222210101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101222221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2159278 + ... + 2163950.

It is an arithmetic number, because the mean of its divisors is an integer number (201412008).

Almost surely, 2^10101222222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10101222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12890368512).

10101222222 is an abundant number, since it is smaller than the sum of its proper divisors (15679514802).

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

10101222222 is a wasteful number, since it uses less digits than its factorization.

10101222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10101222222 its reverse (22222210101), we get a palindrome (32323432323).

It can be divided in two parts, 10101 and 222222, that multiplied together give a palindrome (2244664422).

The spelling of 10101222222 in words is "ten billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty-two".