1210221110201 has 4 divisors (see below), whose sum is σ = 1210320231504. Its totient is φ = 1210121988900.

The previous prime is 1210221110159. The next prime is 1210221110221. The reversal of 1210221110201 is 1020111220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1210221110201 - 2³⁴ = 1193041241017 is a prime.

It is a super-2 number, since 2×1210221110201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1210221110221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49542335 + ... + 49566756.

It is an arithmetic number, because the mean of its divisors is an integer number (302580057876).

Almost surely, 2^{1210221110201} is an apocalyptic number.

It is an amenable number.

1210221110201 is a deficient number, since it is larger than the sum of its proper divisors (99121303).

1210221110201 is an equidigital number, since it uses as much as digits as its factorization.

1210221110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99121302.

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

Adding to 1210221110201 its reverse (1020111220121), we get a palindrome (2230332330322).

The spelling of 1210221110201 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, one hundred ten thousand, two hundred one".