1010101220121 has 16 divisors (see below), whose sum is σ = 1539219354624. Its totient is φ = 577194136464.

The previous prime is 1010101220077. The next prime is 1010101220129. The reversal of 1010101220121 is 1210221010101.

It is not a de Polignac number, because 1010101220121 - 2⁹ = 1010101219609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010101220097 and 1010101220106.

It is not an unprimeable number, because it can be changed into a prime (1010101220129) 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, 2095570 + ... + 2532116.

It is an arithmetic number, because the mean of its divisors is an integer number (96201209664).

Almost surely, 2^{1010101220121} is an apocalyptic number.

It is an amenable number.

1010101220121 is a deficient number, since it is larger than the sum of its proper divisors (529118134503).

1010101220121 is a wasteful number, since it uses less digits than its factorization.

1010101220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546740.

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

Adding to 1010101220121 its reverse (1210221010101), we get a palindrome (2220322230222).

The spelling of 1010101220121 in words is "one trillion, ten billion, one hundred one million, two hundred twenty thousand, one hundred twenty-one".