1211210012122 has 8 divisors (see below), whose sum is σ = 1981980019872. Its totient is φ = 550550005500.

The previous prime is 1211210012119. The next prime is 1211210012161. The reversal of 1211210012122 is 2212100121121.

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 = 1211210012096 and 1211210012105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27527500254 + ... + 27527500297.

It is an arithmetic number, because the mean of its divisors is an integer number (247747502484).

Almost surely, 2^{1211210012122} is an apocalyptic number.

1211210012122 is a deficient number, since it is larger than the sum of its proper divisors (770770007750).

1211210012122 is a wasteful number, since it uses less digits than its factorization.

1211210012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55055000564.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211210012122 its reverse (2212100121121), we get a palindrome (3423310133243).

The spelling of 1211210012122 in words is "one trillion, two hundred eleven billion, two hundred ten million, twelve thousand, one hundred twenty-two".