1210101000221 has 16 divisors (see below), whose sum is σ = 1221923985408. Its totient is φ = 1198345564800.

The previous prime is 1210101000211. The next prime is 1210101000307. The reversal of 1210101000221 is 1220001010121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210101000221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210101000211) 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 15 ways as a sum of consecutive naturals, for example, 46063136 + ... + 46089398.

It is an arithmetic number, because the mean of its divisors is an integer number (76370249088).

Almost surely, 2^{1210101000221} is an apocalyptic number.

It is an amenable number.

1210101000221 is a deficient number, since it is larger than the sum of its proper divisors (11822985187).

1210101000221 is a wasteful number, since it uses less digits than its factorization.

1210101000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27532.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210101000221 its reverse (1220001010121), we get a palindrome (2430102010342).

The spelling of 1210101000221 in words is "one trillion, two hundred ten billion, one hundred one million, two hundred twenty-one", and thus it is an aban number.