101200201021221 has 16 divisors (see below), whose sum is σ = 136247160391680. Its totient is φ = 66810055051440.

The previous prime is 101200201021187. The next prime is 101200201021277. The reversal of 101200201021221 is 122120102002101.

It is not a de Polignac number, because 101200201021221 - 2⁷ = 101200201021093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101200201021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200209021221) 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, 7785016 + ... + 16217486.

It is an arithmetic number, because the mean of its divisors is an integer number (8515447524480).

Almost surely, 2^{101200201021221} is an apocalyptic number.

It is an amenable number.

101200201021221 is a deficient number, since it is larger than the sum of its proper divisors (35046959370459).

101200201021221 is a wasteful number, since it uses less digits than its factorization.

101200201021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8471416.

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

Adding to 101200201021221 its reverse (122120102002101), we get a palindrome (223320303023322).

The spelling of 101200201021221 in words is "one hundred one trillion, two hundred billion, two hundred one million, twenty-one thousand, two hundred twenty-one".