101221021020212 has 24 divisors (see below), whose sum is σ = 180347437523400. Its totient is φ = 49699236704256.

The previous prime is 101221021020199. The next prime is 101221021020239. The reversal of 101221021020212 is 212020120122101.

It can be written as a sum of positive squares in 4 ways, for example, as 72655780154896 + 28565240865316 = 8523836^2 + 5344646^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756805037 + ... + 756938772.

It is an arithmetic number, because the mean of its divisors is an integer number (7514476563475).

Almost surely, 2^{101221021020212} is an apocalyptic number.

It is an amenable number.

101221021020212 is a deficient number, since it is larger than the sum of its proper divisors (79126416503188).

101221021020212 is a wasteful number, since it uses less digits than its factorization.

101221021020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513744115 (or 1513744113 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101221021020212 its reverse (212020120122101), we get a palindrome (313241141142313).

The spelling of 101221021020212 in words is "one hundred one trillion, two hundred twenty-one billion, twenty-one million, twenty thousand, two hundred twelve".