101202221221 has 4 divisors (see below), whose sum is σ = 101209867200. Its totient is φ = 101194575244.

The previous prime is 101202221209. The next prime is 101202221231. The reversal of 101202221221 is 122122202101.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 101202221221 - 2¹⁹ = 101201696933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101202221195 and 101202221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101202221231) 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, 3803101 + ... + 3829618.

It is an arithmetic number, because the mean of its divisors is an integer number (25302466800).

Almost surely, 2^101202221221 is an apocalyptic number.

It is an amenable number.

101202221221 is a deficient number, since it is larger than the sum of its proper divisors (7645979).

101202221221 is an equidigital number, since it uses as much as digits as its factorization.

101202221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645978.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101202221221 its reverse (122122202101), we get a palindrome (223324423322).

The spelling of 101202221221 in words is "one hundred one billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".