101230212221 has 4 divisors (see below), whose sum is σ = 101431465632. Its totient is φ = 101028958812.

The previous prime is 101230212211. The next prime is 101230212277. The reversal of 101230212221 is 122212032101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122212032101 = 971 ⋅125862031.

It is a cyclic number.

It is not a de Polignac number, because 101230212221 - 2¹⁸ = 101229950077 is a prime.

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 101230212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101230212211) 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, 100625951 + ... + 100626956.

It is an arithmetic number, because the mean of its divisors is an integer number (25357866408).

Almost surely, 2^101230212221 is an apocalyptic number.

It is an amenable number.

101230212221 is a deficient number, since it is larger than the sum of its proper divisors (201253411).

101230212221 is an equidigital number, since it uses as much as digits as its factorization.

101230212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201253410.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 101230212221 its reverse (122212032101), we get a palindrome (223442244322).

The spelling of 101230212221 in words is "one hundred one billion, two hundred thirty million, two hundred twelve thousand, two hundred twenty-one".