1210221002101 has 4 divisors (see below), whose sum is σ = 1221970720672. Its totient is φ = 1198471283532.

The previous prime is 1210221002063. The next prime is 1210221002119. The reversal of 1210221002101 is 1012001220121.

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 1210221002101 - 2¹⁵ = 1210220969333 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 (1210221002141) 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, 5874859131 + ... + 5874859336.

It is an arithmetic number, because the mean of its divisors is an integer number (305492680168).

Almost surely, 2^{1210221002101} is an apocalyptic number.

It is an amenable number.

1210221002101 is a deficient number, since it is larger than the sum of its proper divisors (11749718571).

1210221002101 is a wasteful number, since it uses less digits than its factorization.

1210221002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11749718570.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210221002101 its reverse (1012001220121), we get a palindrome (2222222222222).

The spelling of 1210221002101 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, two thousand, one hundred one".