1211232122101 has 16 divisors (see below), whose sum is σ = 1224531000000. Its totient is φ = 1198005935616.

The previous prime is 1211232122099. The next prime is 1211232122173. The reversal of 1211232122101 is 1012212321121.

It is a cyclic number.

It is not a de Polignac number, because 1211232122101 - 2¹ = 1211232122099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211232126101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48928275 + ... + 48953023.

It is an arithmetic number, because the mean of its divisors is an integer number (76533187500).

Almost surely, 2^{1211232122101} is an apocalyptic number.

It is an amenable number.

1211232122101 is a deficient number, since it is larger than the sum of its proper divisors (13298877899).

1211232122101 is a wasteful number, since it uses less digits than its factorization.

1211232122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26196.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1211232122101 its reverse (1012212321121), we get a palindrome (2223444443222).

The spelling of 1211232122101 in words is "one trillion, two hundred eleven billion, two hundred thirty-two million, one hundred twenty-two thousand, one hundred one".