10222222122121 has 4 divisors (see below), whose sum is σ = 10323432242244. Its totient is φ = 10121012002000.

The previous prime is 10222222122113. The next prime is 10222222122131. The reversal of 10222222122121 is 12122122222201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5946379790400 + 4275842331721 = 2438520^2 + 2067811^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222222122121 - 2³ = 10222222122113 is a prime.

It is a super-2 number, since 2×10222222122121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10222222122092 and 10222222122101.

It is not an unprimeable number, because it can be changed into a prime (10222222122131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50605059910 + ... + 50605060111.

It is an arithmetic number, because the mean of its divisors is an integer number (2580858060561).

Almost surely, 2^{10222222122121} is an apocalyptic number.

It is an amenable number.

10222222122121 is a deficient number, since it is larger than the sum of its proper divisors (101210120123).

10222222122121 is a wasteful number, since it uses less digits than its factorization.

10222222122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101210120122.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 10222222122121 its reverse (12122122222201), we get a palindrome (22344344344322).

The spelling of 10222222122121 in words is "ten trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".