101130213221 has 4 divisors (see below), whose sum is σ = 101401340172. Its totient is φ = 100859086272.

The previous prime is 101130213179. The next prime is 101130213227. The reversal of 101130213221 is 122312031101.

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 42224496196 + 58905717025 = 205486^2 + 242705^2 .

It is a cyclic number.

It is not a de Polignac number, because 101130213221 - 2¹⁴ = 101130196837 is a prime.

It is a super-2 number, since 2×101130213221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101130213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101130213227) 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, 135562916 + ... + 135563661.

It is an arithmetic number, because the mean of its divisors is an integer number (25350335043).

Almost surely, 2^101130213221 is an apocalyptic number.

It is an amenable number.

101130213221 is a deficient number, since it is larger than the sum of its proper divisors (271126951).

101130213221 is an equidigital number, since it uses as much as digits as its factorization.

101130213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271126950.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101130213221 its reverse (122312031101), we get a palindrome (223442244322).

The spelling of 101130213221 in words is "one hundred one billion, one hundred thirty million, two hundred thirteen thousand, two hundred twenty-one".