101220210200221 has 4 divisors (see below), whose sum is σ = 115680240228832. Its totient is φ = 86760180171612.

The previous prime is 101220210200203. The next prime is 101220210200267. The reversal of 101220210200221 is 122002012022101.

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 101220210200221 - 2¹⁹ = 101220209675933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220210200195 and 101220210200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220210209221) 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, 7230015014295 + ... + 7230015014308.

It is an arithmetic number, because the mean of its divisors is an integer number (28920060057208).

Almost surely, 2^{101220210200221} is an apocalyptic number.

It is an amenable number.

101220210200221 is a deficient number, since it is larger than the sum of its proper divisors (14460030028611).

101220210200221 is an equidigital number, since it uses as much as digits as its factorization.

101220210200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14460030028610.

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

Adding to 101220210200221 its reverse (122002012022101), we get a palindrome (223222222222322).

The spelling of 101220210200221 in words is "one hundred one trillion, two hundred twenty billion, two hundred ten million, two hundred thousand, two hundred twenty-one".