1202101210221 has 4 divisors (see below), whose sum is σ = 1602801613632. Its totient is φ = 801400806812.

The previous prime is 1202101210199. The next prime is 1202101210243. The reversal of 1202101210221 is 1220121012021.

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 an interprime number because it is at equal distance from previous prime (1202101210199) and next prime (1202101210243).

It is a cyclic number.

It is not a de Polignac number, because 1202101210221 - 2²⁷ = 1201966992493 is a prime.

It is a super-2 number, since 2×1202101210221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1202101210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202101210021) 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, 200350201701 + ... + 200350201706.

It is an arithmetic number, because the mean of its divisors is an integer number (400700403408).

Almost surely, 2^{1202101210221} is an apocalyptic number.

It is an amenable number.

1202101210221 is a deficient number, since it is larger than the sum of its proper divisors (400700403411).

1202101210221 is an equidigital number, since it uses as much as digits as its factorization.

1202101210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400700403410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202101210221 its reverse (1220121012021), we get a palindrome (2422222222242).

The spelling of 1202101210221 in words is "one trillion, two hundred two billion, one hundred one million, two hundred ten thousand, two hundred twenty-one".