2200122121221 has 24 divisors (see below), whose sum is σ = 3269642344800. Its totient is φ = 1424571294816.

The previous prime is 2200122121193. The next prime is 2200122121283. The reversal of 2200122121221 is 1221212210022.

It is a happy number.

2200122121221 is a `hidden beast` number, since 2 + 200 + 1 + 221 + 21 + 221 = 666.

It is not a de Polignac number, because 2200122121221 - 2¹⁵ = 2200122088453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2200122121194 and 2200122121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200122121291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5680171 + ... + 6055128.

It is an arithmetic number, because the mean of its divisors is an integer number (136235097700).

Almost surely, 2^{2200122121221} is an apocalyptic number.

It is an amenable number.

2200122121221 is a deficient number, since it is larger than the sum of its proper divisors (1069520223579).

2200122121221 is a wasteful number, since it uses less digits than its factorization.

2200122121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735905 (or 11735902 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2200122121221 its reverse (1221212210022), we get a palindrome (3421334331243).

The spelling of 2200122121221 in words is "two trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".