1211001202122 has 32 divisors (see below), whose sum is σ = 2480087712960. Its totient is φ = 393999513600.

The previous prime is 1211001202111. The next prime is 1211001202129. The reversal of 1211001202122 is 2212021001121.

It is not an unprimeable number, because it can be changed into a prime (1211001202129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1302129 + ... + 2029172.

It is an arithmetic number, because the mean of its divisors is an integer number (77502741030).

Almost surely, 2^{1211001202122} is an apocalyptic number.

1211001202122 is an abundant number, since it is smaller than the sum of its proper divisors (1269086510838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211001202122 is a wasteful number, since it uses less digits than its factorization.

1211001202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332758.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211001202122 its reverse (2212021001121), we get a palindrome (3423022203243).

The spelling of 1211001202122 in words is "one trillion, two hundred eleven billion, one million, two hundred two thousand, one hundred twenty-two".