1201020220221 has 32 divisors (see below), whose sum is σ = 1640725632000. Its totient is φ = 781204743168.

The previous prime is 1201020220193. The next prime is 1201020220319. The reversal of 1201020220221 is 1220220201021.

It is not a de Polignac number, because 1201020220221 - 2¹⁰ = 1201020219197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201020220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201020220721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115112221 + ... + 115122653.

It is an arithmetic number, because the mean of its divisors is an integer number (51272676000).

Almost surely, 2^{1201020220221} is an apocalyptic number.

It is an amenable number.

1201020220221 is a deficient number, since it is larger than the sum of its proper divisors (439705411779).

1201020220221 is a wasteful number, since it uses less digits than its factorization.

1201020220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1201020220221 its reverse (1220220201021), we get a palindrome (2421240421242).

It can be divided in two parts, 1201020 and 220221, that added together give a palindrome (1421241).

The spelling of 1201020220221 in words is "one trillion, two hundred one billion, twenty million, two hundred twenty thousand, two hundred twenty-one".