1201012020221 has 32 divisors (see below), whose sum is σ = 1375457825280. Its totient is φ = 1039495680000.

The previous prime is 1201012020217. The next prime is 1201012020227. The reversal of 1201012020221 is 1220202101021.

It is a cyclic number.

It is not a de Polignac number, because 1201012020221 - 2² = 1201012020217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201012020196 and 1201012020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201012020227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83390621 + ... + 83405021.

It is an arithmetic number, because the mean of its divisors is an integer number (42983057040).

Almost surely, 2^{1201012020221} is an apocalyptic number.

It is an amenable number.

1201012020221 is a deficient number, since it is larger than the sum of its proper divisors (174445805059).

1201012020221 is a wasteful number, since it uses less digits than its factorization.

1201012020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17877.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201012020221 its reverse (1220202101021), we get a palindrome (2421214121242).

The spelling of 1201012020221 in words is "one trillion, two hundred one billion, twelve million, twenty thousand, two hundred twenty-one".