101112212221 has 4 divisors (see below), whose sum is σ = 101113567200. Its totient is φ = 101110857244.

The previous prime is 101112212207. The next prime is 101112212237. The reversal of 101112212221 is 122212211101.

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: 122212211101 = 8971 ⋅13623031.

It is a cyclic number.

It is not a de Polignac number, because 101112212221 - 2¹³ = 101112204029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101112212195 and 101112212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112212291) 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, 558601 + ... + 717118.

It is an arithmetic number, because the mean of its divisors is an integer number (25278391800).

Almost surely, 2^101112212221 is an apocalyptic number.

It is an amenable number.

101112212221 is a deficient number, since it is larger than the sum of its proper divisors (1354979).

101112212221 is an equidigital number, since it uses as much as digits as its factorization.

101112212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354978.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101112212221 its reverse (122212211101), we get a palindrome (223324423322).

The spelling of 101112212221 in words is "one hundred one billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-one".