1010101201221 has 24 divisors (see below), whose sum is σ = 1566877041984. Its totient is φ = 577130883840.

The previous prime is 1010101201181. The next prime is 1010101201231. The reversal of 1010101201221 is 1221021010101.

It is not a de Polignac number, because 1010101201221 - 2⁶ = 1010101201157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1010101201197 and 1010101201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010101201231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 816576 + ... + 1639206.

It is an arithmetic number, because the mean of its divisors is an integer number (65286543416).

Almost surely, 2^{1010101201221} is an apocalyptic number.

It is an amenable number.

1010101201221 is a deficient number, since it is larger than the sum of its proper divisors (556775840763).

1010101201221 is an equidigital number, since it uses as much as digits as its factorization.

1010101201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831001 (or 830994 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1010101201221 its reverse (1221021010101), we get a palindrome (2231122211322).

The spelling of 1010101201221 in words is "one trillion, ten billion, one hundred one million, two hundred one thousand, two hundred twenty-one".