1200022010221 has 8 divisors (see below), whose sum is σ = 1271142553464. Its totient is φ = 1128960468480.

The previous prime is 1200022010183. The next prime is 1200022010233. The reversal of 1200022010221 is 1220102200021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 81950512900 + 1118071497321 = 286270^2 + 1057389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200022010221 - 2²⁵ = 1199988455789 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 (1200022017221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14708490 + ... + 14789851.

It is an arithmetic number, because the mean of its divisors is an integer number (158892819183).

Almost surely, 2^{1200022010221} is an apocalyptic number.

It is an amenable number.

1200022010221 is a deficient number, since it is larger than the sum of its proper divisors (71120543243).

1200022010221 is a wasteful number, since it uses less digits than its factorization.

1200022010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29500751.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200022010221 its reverse (1220102200021), we get a palindrome (2420124210242).

The spelling of 1200022010221 in words is "one trillion, two hundred billion, twenty-two million, ten thousand, two hundred twenty-one".