10101221121 has 16 divisors (see below), whose sum is σ = 14059059840. Its totient is φ = 6438981120.

The previous prime is 10101221113. The next prime is 10101221171. The reversal of 10101221121 is 12112210101.

It is not a de Polignac number, because 10101221121 - 2³ = 10101221113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101221097 and 10101221106.

It is not an unprimeable number, because it can be changed into a prime (10101221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171825 + ... + 222993.

It is an arithmetic number, because the mean of its divisors is an integer number (878691240).

Almost surely, 2^10101221121 is an apocalyptic number.

It is an amenable number.

10101221121 is a deficient number, since it is larger than the sum of its proper divisors (3957838719).

10101221121 is a wasteful number, since it uses less digits than its factorization.

10101221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54056.

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

Adding to 10101221121 its reverse (12112210101), we get a palindrome (22213431222).

The spelling of 10101221121 in words is "ten billion, one hundred one million, two hundred twenty-one thousand, one hundred twenty-one".