200121220212001 has 32 divisors (see below), whose sum is σ = 227234165391360. Its totient is φ = 174656609462400.

The previous prime is 200121220211993. The next prime is 200121220212013. The reversal of 200121220212001 is 100212022121002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200121220212001 - 2³ = 200121220211993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121220212301) 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, 6761856 + ... + 21117886.

It is an arithmetic number, because the mean of its divisors is an integer number (7101067668480).

Almost surely, 2^{200121220212001} is an apocalyptic number.

It is an amenable number.

200121220212001 is a deficient number, since it is larger than the sum of its proper divisors (27112945179359).

200121220212001 is a wasteful number, since it uses less digits than its factorization.

200121220212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356605.

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

Adding to 200121220212001 its reverse (100212022121002), we get a palindrome (300333242333003).

The spelling of 200121220212001 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, one".