1211211000122 has 8 divisors (see below), whose sum is σ = 1828388580276. Its totient is φ = 601748140032.

The previous prime is 1211211000119. The next prime is 1211211000137. The reversal of 1211211000122 is 2210001121121.

It can be written as a sum of positive squares in 2 ways, for example, as 1208638583161 + 2572416961 = 1099381^2 + 50719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211211000097 and 1211211000106.

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 in 3 ways as a sum of consecutive naturals, for example, 1928679623 + ... + 1928680250.

Almost surely, 2^{1211211000122} is an apocalyptic number.

1211211000122 is a deficient number, since it is larger than the sum of its proper divisors (617177580154).

1211211000122 is a wasteful number, since it uses less digits than its factorization.

1211211000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857360032.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211211000122 its reverse (2210001121121), we get a palindrome (3421212121243).

The spelling of 1211211000122 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty-two", and thus it is an aban number.