200122111221221 has 4 divisors (see below), whose sum is σ = 228710984252832. Its totient is φ = 171533238189612.

The previous prime is 200122111221211. The next prime is 200122111221223. The reversal of 200122111221221 is 122122111221002.

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 a de Polignac number, because none of the positive numbers 2^k-200122111221221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200122111221193 and 200122111221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200122111221223) 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, 14294436515795 + ... + 14294436515808.

It is an arithmetic number, because the mean of its divisors is an integer number (57177746063208).

Almost surely, 2^{200122111221221} is an apocalyptic number.

It is an amenable number.

200122111221221 is a deficient number, since it is larger than the sum of its proper divisors (28588873031611).

200122111221221 is an equidigital number, since it uses as much as digits as its factorization.

200122111221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28588873031610.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 200122111221221 its reverse (122122111221002), we get a palindrome (322244222442223).

The spelling of 200122111221221 in words is "two hundred trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-one".