200220121002001 has 8 divisors (see below), whose sum is σ = 200282471447240. Its totient is φ = 200157776151552.

The previous prime is 200220121001977. The next prime is 200220121002023. The reversal of 200220121002001 is 100200121022002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44855488235776 + 155364632766225 = 6697424^2 + 12464535^2 .

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 200220121002001 - 2²³ = 200220112613393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200220121002701) 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, 70765141 + ... + 73540093.

It is an arithmetic number, because the mean of its divisors is an integer number (25035308930905).

Almost surely, 2^{200220121002001} is an apocalyptic number.

It is an amenable number.

200220121002001 is a deficient number, since it is larger than the sum of its proper divisors (62350445239).

200220121002001 is a wasteful number, since it uses less digits than its factorization.

200220121002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797395.

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

Adding to 200220121002001 its reverse (100200121022002), we get a palindrome (300420242024003).

The spelling of 200220121002001 in words is "two hundred trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, one".