200121222001 has 8 divisors (see below), whose sum is σ = 204830135840. Its totient is φ = 195414805152.

The previous prime is 200121221987. The next prime is 200121222011. The reversal of 200121222001 is 100222121002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200121222001 - 2⁵ = 200121221969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121222011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461580 + ... + 783133.

It is an arithmetic number, because the mean of its divisors is an integer number (25603766980).

Almost surely, 2^200121222001 is an apocalyptic number.

It is an amenable number.

200121222001 is a deficient number, since it is larger than the sum of its proper divisors (4708913839).

200121222001 is a wasteful number, since it uses less digits than its factorization.

200121222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248495.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200121222001 its reverse (100222121002), we get a palindrome (300343343003).

The spelling of 200121222001 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty-two thousand, one".