101221010101012 has 12 divisors (see below), whose sum is σ = 177201110873556. Its totient is φ = 50592121280000.

The previous prime is 101221010101007. The next prime is 101221010101049. The reversal of 101221010101012 is 210101010122101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39544553094916 + 61676457006096 = 6288446^2 + 7853436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101221010100983 and 101221010101001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4595930239 + ... + 4595952262.

It is an arithmetic number, because the mean of its divisors is an integer number (14766759239463).

Almost surely, 2^{101221010101012} is an apocalyptic number.

It is an amenable number.

101221010101012 is a deficient number, since it is larger than the sum of its proper divisors (75980100772544).

101221010101012 is a wasteful number, since it uses less digits than its factorization.

101221010101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191885258 (or 9191885256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101221010101012 its reverse (210101010122101), we get a palindrome (311322020223113).

The spelling of 101221010101012 in words is "one hundred one trillion, two hundred twenty-one billion, ten million, one hundred one thousand, twelve".