1210102211221 has 8 divisors (see below), whose sum is σ = 1281720706560. Its totient is φ = 1138532161728.

The previous prime is 1210102211209. The next prime is 1210102211243. The reversal of 1210102211221 is 1221122010121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210102211221 - 2⁷ = 1210102211093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210102211195 and 1210102211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210102211261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12060021 + ... + 12159946.

It is an arithmetic number, because the mean of its divisors is an integer number (160215088320).

Almost surely, 2^{1210102211221} is an apocalyptic number.

It is an amenable number.

1210102211221 is a deficient number, since it is larger than the sum of its proper divisors (71618495339).

1210102211221 is a wasteful number, since it uses less digits than its factorization.

1210102211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24222923.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1210102211221 its reverse (1221122010121), we get a palindrome (2431224221342).

The spelling of 1210102211221 in words is "one trillion, two hundred ten billion, one hundred two million, two hundred eleven thousand, two hundred twenty-one".