1010122010221 has 4 divisors (see below), whose sum is σ = 1010600063452. Its totient is φ = 1009643956992.

The previous prime is 1010122010197. The next prime is 1010122010231. The reversal of 1010122010221 is 1220102210101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 436906458121 + 573215552100 = 660989^2 + 757110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010122010221 - 2²³ = 1010113621613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010122010231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239023446 + ... + 239027671.

It is an arithmetic number, because the mean of its divisors is an integer number (252650015863).

Almost surely, 2^{1010122010221} is an apocalyptic number.

It is an amenable number.

1010122010221 is a deficient number, since it is larger than the sum of its proper divisors (478053231).

1010122010221 is an equidigital number, since it uses as much as digits as its factorization.

1010122010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478053230.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1010122010221 its reverse (1220102210101), we get a palindrome (2230224220322).

The spelling of 1010122010221 in words is "one trillion, ten billion, one hundred twenty-two million, ten thousand, two hundred twenty-one".