1202121002221 has 8 divisors (see below), whose sum is σ = 1203380575488. Its totient is φ = 1200861720000.

The previous prime is 1202121002207. The next prime is 1202121002233. The reversal of 1202121002221 is 1222001212021.

It is a happy number.

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 1202121002221 - 2¹¹ = 1202121000173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202121002195 and 1202121002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202121002321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8748196 + ... + 8884546.

It is an arithmetic number, because the mean of its divisors is an integer number (150422571936).

Almost surely, 2^{1202121002221} is an apocalyptic number.

It is an amenable number.

1202121002221 is a deficient number, since it is larger than the sum of its proper divisors (1259573267).

1202121002221 is a wasteful number, since it uses less digits than its factorization.

1202121002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145523.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1202121002221 its reverse (1222001212021), we get a palindrome (2424122214242).

The spelling of 1202121002221 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two thousand, two hundred twenty-one".