201103120130221 has 4 divisors (see below), whose sum is σ = 201103162656732. Its totient is φ = 201103077603712.

The previous prime is 201103120130201. The next prime is 201103120130239. The reversal of 201103120130221 is 122031021301102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108288894378025 + 92814225752196 = 10406195^2 + 9634014^2 .

It is a cyclic number.

It is not a de Polignac number, because 201103120130221 - 2³⁷ = 200965681176749 is a prime.

It is a super-2 number, since 2×201103120130221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201103120130201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13133926 + ... + 23973031.

It is an arithmetic number, because the mean of its divisors is an integer number (50275790664183).

Almost surely, 2^{201103120130221} is an apocalyptic number.

It is an amenable number.

201103120130221 is a deficient number, since it is larger than the sum of its proper divisors (42526511).

201103120130221 is an equidigital number, since it uses as much as digits as its factorization.

201103120130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42526510.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 201103120130221 its reverse (122031021301102), we get a palindrome (323134141431323).

The spelling of 201103120130221 in words is "two hundred one trillion, one hundred three billion, one hundred twenty million, one hundred thirty thousand, two hundred twenty-one".