200201100122221 has 32 divisors (see below), whose sum is σ = 221852338819200. Its totient is φ = 179147338752000.

The previous prime is 200201100122119. The next prime is 200201100122237. The reversal of 200201100122221 is 122221001102002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200201100122221 - 2²⁷ = 200200965904493 is a prime.

It is a super-2 number, since 2×200201100122221² (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 = 200201100122195 and 200201100122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200201100122291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326259705 + ... + 326872753.

It is an arithmetic number, because the mean of its divisors is an integer number (6932885588100).

Almost surely, 2^{200201100122221} is an apocalyptic number.

It is an amenable number.

200201100122221 is a deficient number, since it is larger than the sum of its proper divisors (21651238696979).

200201100122221 is a wasteful number, since it uses less digits than its factorization.

200201100122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614877.

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

Adding to 200201100122221 its reverse (122221001102002), we get a palindrome (322422101224223).

The spelling of 200201100122221 in words is "two hundred trillion, two hundred one billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-one".