1210201101221 has 16 divisors (see below), whose sum is σ = 1415914948608. Its totient is φ = 1012975632000.

The previous prime is 1210201101203. The next prime is 1210201101223. The reversal of 1210201101221 is 1221011020121.

It is a cyclic number.

It is not a de Polignac number, because 1210201101221 - 2¹⁴ = 1210201084837 is a prime.

It is a super-3 number, since 3×1210201101221³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210201101196 and 1210201101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210201101223) 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, 11672645 + ... + 11775866.

It is an arithmetic number, because the mean of its divisors is an integer number (88494684288).

Almost surely, 2^{1210201101221} is an apocalyptic number.

It is an amenable number.

1210201101221 is a deficient number, since it is larger than the sum of its proper divisors (205713847387).

1210201101221 is a wasteful number, since it uses less digits than its factorization.

1210201101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23448692.

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

Adding to 1210201101221 its reverse (1221011020121), we get a palindrome (2431212121342).

The spelling of 1210201101221 in words is "one trillion, two hundred ten billion, two hundred one million, one hundred one thousand, two hundred twenty-one".