200121012010 has 32 divisors (see below), whose sum is σ = 362656388160. Its totient is φ = 79507122048.

The previous prime is 200121011999. The next prime is 200121012011. The reversal of 200121012010 is 10210121002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (200121012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2601054 + ... + 2676886.

It is an arithmetic number, because the mean of its divisors is an integer number (11333012130).

Almost surely, 2^200121012010 is an apocalyptic number.

200121012010 is a deficient number, since it is larger than the sum of its proper divisors (162535376150).

200121012010 is a wasteful number, since it uses less digits than its factorization.

200121012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77622.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 200121012010 its reverse (10210121002), we get a palindrome (210331133012).

The spelling of 200121012010 in words is "two hundred billion, one hundred twenty-one million, twelve thousand, ten".