12202012211021 has 16 divisors (see below), whose sum is σ = 12274940233200. Its totient is φ = 12129189101568.

The previous prime is 12202012211017. The next prime is 12202012211033. The reversal of 12202012211021 is 12011221020221.

It can be written as a sum of positive squares in 8 ways, for example, as 1478096692900 + 10723915518121 = 1215770^2 + 3274739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202012211021 - 2² = 12202012211017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202012211041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1925515565 + ... + 1925521901.

It is an arithmetic number, because the mean of its divisors is an integer number (767183764575).

Almost surely, 2^{12202012211021} is an apocalyptic number.

It is an amenable number.

12202012211021 is a deficient number, since it is larger than the sum of its proper divisors (72928022179).

12202012211021 is a wasteful number, since it uses less digits than its factorization.

12202012211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12202012211021 its reverse (12011221020221), we get a palindrome (24213233231242).

The spelling of 12202012211021 in words is "twelve trillion, two hundred two billion, twelve million, two hundred eleven thousand, twenty-one".