1202011210021 has 8 divisors (see below), whose sum is σ = 1215362619000. Its totient is φ = 1188730257600.

The previous prime is 1202011209979. The next prime is 1202011210133. The reversal of 1202011210021 is 1200121102021.

It can be written as a sum of positive squares in 4 ways, for example, as 600787761025 + 601223448996 = 775105^2 + 775386^2 .

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 1202011210021 - 2¹¹ = 1202011207973 is a prime.

It is a super-2 number, since 2×1202011210021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202011209983 and 1202011210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202011210721) 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, 17579830 + ... + 17648071.

It is an arithmetic number, because the mean of its divisors is an integer number (151920327375).

Almost surely, 2^{1202011210021} is an apocalyptic number.

It is an amenable number.

1202011210021 is a deficient number, since it is larger than the sum of its proper divisors (13351408979).

1202011210021 is a wasteful number, since it uses less digits than its factorization.

1202011210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35228279.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1202011210021 its reverse (1200121102021), we get a palindrome (2402132312042).

The spelling of 1202011210021 in words is "one trillion, two hundred two billion, eleven million, two hundred ten thousand, twenty-one".