1202202101221 has 4 divisors (see below), whose sum is σ = 1311493201344. Its totient is φ = 1092911001100.

The previous prime is 1202202101129. The next prime is 1202202101239. The reversal of 1202202101221 is 1221012022021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202202101221 - 2⁹ = 1202202100709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202202101195 and 1202202101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202202101521) 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, 54645550045 + ... + 54645550066.

It is an arithmetic number, because the mean of its divisors is an integer number (327873300336).

Almost surely, 2^{1202202101221} is an apocalyptic number.

1202202101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202202101221 is a deficient number, since it is larger than the sum of its proper divisors (109291100123).

1202202101221 is a wasteful number, since it uses less digits than its factorization.

1202202101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109291100122.

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

Adding to 1202202101221 its reverse (1221012022021), we get a palindrome (2423214123242).

The spelling of 1202202101221 in words is "one trillion, two hundred two billion, two hundred two million, one hundred one thousand, two hundred twenty-one".