1202122221122 has 4 divisors (see below), whose sum is σ = 1803183331686. Its totient is φ = 601061110560.

The previous prime is 1202122221071. The next prime is 1202122221137. The reversal of 1202122221122 is 2211222212021.

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

It can be written as a sum of positive squares in only one way, i.e., 1062484731361 + 139637489761 = 1030769^2 + 373681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1202122221094 and 1202122221103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300530555279 + ... + 300530555282.

Almost surely, 2^{1202122221122} is an apocalyptic number.

1202122221122 is a deficient number, since it is larger than the sum of its proper divisors (601061110564).

1202122221122 is an equidigital number, since it uses as much as digits as its factorization.

1202122221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601061110563.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1202122221122 its reverse (2211222212021), we get a palindrome (3413344433143).

The spelling of 1202122221122 in words is "one trillion, two hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".