10101221101212 has 24 divisors (see below), whose sum is σ = 23569590240000. Its totient is φ = 3367063080816.

The previous prime is 10101221101189. The next prime is 10101221101229. The reversal of 10101221101212 is 21210112210101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10101221101191 and 10101221101200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3273789 + ... + 5560587.

It is an arithmetic number, because the mean of its divisors is an integer number (982066260000).

Almost surely, 2^{10101221101212} is an apocalyptic number.

10101221101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10101221101212 is an abundant number, since it is smaller than the sum of its proper divisors (13468369138788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101221101212 is a wasteful number, since it uses less digits than its factorization.

10101221101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654905 (or 2654903 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10101221101212 its reverse (21210112210101), we get a palindrome (31311333311313).

The spelling of 10101221101212 in words is "ten trillion, one hundred one billion, two hundred twenty-one million, one hundred one thousand, two hundred twelve".