200121220232 has 16 divisors (see below), whose sum is σ = 375414650640. Its totient is φ = 100010646736.

The previous prime is 200121220231. The next prime is 200121220249. The reversal of 200121220232 is 232022121002.

It is a super-2 number, since 2×200121220232² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200121220232.

It is not an unprimeable number, because it can be changed into a prime (200121220231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6228398 + ... + 6260445.

It is an arithmetic number, because the mean of its divisors is an integer number (23463415665).

Almost surely, 2^200121220232 is an apocalyptic number.

It is an amenable number.

200121220232 is a deficient number, since it is larger than the sum of its proper divisors (175293430408).

200121220232 is a wasteful number, since it uses less digits than its factorization.

200121220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12490852 (or 12490848 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 200121220232 its reverse (232022121002), we get a palindrome (432143341234).

The spelling of 200121220232 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty thousand, two hundred thirty-two".