1211222322201 has 16 divisors (see below), whose sum is σ = 1620197280000. Its totient is φ = 804866723328.

The previous prime is 1211222322179. The next prime is 1211222322227. The reversal of 1211222322201 is 1022232221121.

It is not a de Polignac number, because 1211222322201 - 2¹⁷ = 1211222191129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211222322281) 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, 1863625 + ... + 2428073.

It is an arithmetic number, because the mean of its divisors is an integer number (101262330000).

Almost surely, 2^{1211222322201} is an apocalyptic number.

It is an amenable number.

1211222322201 is a deficient number, since it is larger than the sum of its proper divisors (408974957799).

1211222322201 is a wasteful number, since it uses less digits than its factorization.

1211222322201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566768.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1211222322201 its reverse (1022232221121), we get a palindrome (2233454543322).

The spelling of 1211222322201 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, three hundred twenty-two thousand, two hundred one".