102201200111221 has 4 divisors (see below), whose sum is σ = 102202756058592. Its totient is φ = 102199644163852.

The previous prime is 102201200111207. The next prime is 102201200111243. The reversal of 102201200111221 is 122111002102201.

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 102201200111221 - 2¹³ = 102201200103029 is a prime.

It is a super-2 number, since 2×102201200111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102201200111195 and 102201200111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201200111201) 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, 777875155 + ... + 778006528.

It is an arithmetic number, because the mean of its divisors is an integer number (25550689014648).

Almost surely, 2^{102201200111221} is an apocalyptic number.

It is an amenable number.

102201200111221 is a deficient number, since it is larger than the sum of its proper divisors (1555947371).

102201200111221 is an equidigital number, since it uses as much as digits as its factorization.

102201200111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555947370.

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

Adding to 102201200111221 its reverse (122111002102201), we get a palindrome (224312202213422).

The spelling of 102201200111221 in words is "one hundred two trillion, two hundred one billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".