10500121222 has 4 divisors (see below), whose sum is σ = 15750181836. Its totient is φ = 5250060610.

The previous prime is 10500121217. The next prime is 10500121223. The reversal of 10500121222 is 22212100501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×10500121222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10500121196 and 10500121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10500121223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625030304 + ... + 2625030307.

It is an arithmetic number, because the mean of its divisors is an integer number (3937545459).

Almost surely, 2^10500121222 is an apocalyptic number.

10500121222 is a deficient number, since it is larger than the sum of its proper divisors (5250060614).

10500121222 is an equidigital number, since it uses as much as digits as its factorization.

10500121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250060613.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 10500121222 its reverse (22212100501), we get a palindrome (32712221723).

The spelling of 10500121222 in words is "ten billion, five hundred million, one hundred twenty-one thousand, two hundred twenty-two".