200121001201220 has 24 divisors (see below), whose sum is σ = 458459020934208. Its totient is φ = 72771273164000.

The previous prime is 200121001201183. The next prime is 200121001201223. The reversal of 200121001201220 is 22102100121002.

It is a junction number, because it is equal to n+sod(n) for n = 200121001201195 and 200121001201204.

It is not an unprimeable number, because it can be changed into a prime (200121001201223) 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, 454820457056 + ... + 454820457495.

It is an arithmetic number, because the mean of its divisors is an integer number (19102459205592).

Almost surely, 2^{200121001201220} is an apocalyptic number.

200121001201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121001201220 is an abundant number, since it is smaller than the sum of its proper divisors (258338019732988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200121001201220 is a wasteful number, since it uses less digits than its factorization.

200121001201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909640914571 (or 909640914569 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200121001201220 its reverse (22102100121002), we get a palindrome (222223101322222).

The spelling of 200121001201220 in words is "two hundred trillion, one hundred twenty-one billion, one million, two hundred one thousand, two hundred twenty".