1201221002122 has 16 divisors (see below), whose sum is σ = 1805895685440. Its totient is φ = 599255951328.

The previous prime is 1201221002089. The next prime is 1201221002141. The reversal of 1201221002122 is 2212001221021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201221002096 and 1201221002105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17257233 + ... + 17326699.

It is an arithmetic number, because the mean of its divisors is an integer number (112868480340).

Almost surely, 2^{1201221002122} is an apocalyptic number.

1201221002122 is a deficient number, since it is larger than the sum of its proper divisors (604674683318).

1201221002122 is a wasteful number, since it uses less digits than its factorization.

1201221002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88845.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201221002122 its reverse (2212001221021), we get a palindrome (3413222223143).

The spelling of 1201221002122 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two thousand, one hundred twenty-two".