1202212101021 has 4 divisors (see below), whose sum is σ = 1602949468032. Its totient is φ = 801474734012.

The previous prime is 1202212101007. The next prime is 1202212101037. The reversal of 1202212101021 is 1201012122021.

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 1202212101021 - 2¹⁹ = 1202211576733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202212108021) 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, 200368683501 + ... + 200368683506.

It is an arithmetic number, because the mean of its divisors is an integer number (400737367008).

Almost surely, 2^{1202212101021} is an apocalyptic number.

It is an amenable number.

1202212101021 is a deficient number, since it is larger than the sum of its proper divisors (400737367011).

1202212101021 is an equidigital number, since it uses as much as digits as its factorization.

1202212101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400737367010.

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

Adding to 1202212101021 its reverse (1201012122021), we get a palindrome (2403224223042).

The spelling of 1202212101021 in words is "one trillion, two hundred two billion, two hundred twelve million, one hundred one thousand, twenty-one".