12200222122 has 12 divisors (see below), whose sum is σ = 20115242658. Its totient is φ = 5545555400.

The previous prime is 12200222119. The next prime is 12200222131. The reversal of 12200222122 is 22122200221.

It can be written as a sum of positive squares in only one way, i.e., 10377700641 + 1822521481 = 101871^2 + 42691^2 .

It is a super-2 number, since 2×12200222122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12200222096 and 12200222105.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25206829 + ... + 25207312.

Almost surely, 2^12200222122 is an apocalyptic number.

12200222122 is a deficient number, since it is larger than the sum of its proper divisors (7915020536).

12200222122 is a wasteful number, since it uses less digits than its factorization.

12200222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50414165 (or 50414154 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12200222122 its reverse (22122200221), we get a palindrome (34322422343).

The spelling of 12200222122 in words is "twelve billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-two".