10012222121 has 16 divisors (see below), whose sum is σ = 11509732800. Its totient is φ = 8613633600.

The previous prime is 10012222067. The next prime is 10012222139. The reversal of 10012222121 is 12122221001.

It is not a de Polignac number, because 10012222121 - 2⁶ = 10012222057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012222096 and 10012222105.

It is not an unprimeable number, because it can be changed into a prime (10012222151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171215 + ... + 222123.

It is an arithmetic number, because the mean of its divisors is an integer number (719358300).

Almost surely, 2^10012222121 is an apocalyptic number.

10012222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10012222121 is a deficient number, since it is larger than the sum of its proper divisors (1497510679).

10012222121 is a wasteful number, since it uses less digits than its factorization.

10012222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51880.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10012222121 its reverse (12122221001), we get a palindrome (22134443122).

It can be divided in two parts, 100 and 12222121, that added together give a palindrome (12222221).

The spelling of 10012222121 in words is "ten billion, twelve million, two hundred twenty-two thousand, one hundred twenty-one".