200724722121 has 144 divisors (see below), whose sum is σ = 357827592192. Its totient is φ = 97949839680.

The previous prime is 200724722117. The next prime is 200724722137. The reversal of 200724722121 is 121227427002.

It is not a de Polignac number, because 200724722121 - 2² = 200724722117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200724722101) 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 143 ways as a sum of consecutive naturals, for example, 116496366 + ... + 116498088.

Almost surely, 2^200724722121 is an apocalyptic number.

200724722121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200724722121 is a deficient number, since it is larger than the sum of its proper divisors (157102870071).

200724722121 is a wasteful number, since it uses less digits than its factorization.

200724722121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The spelling of 200724722121 in words is "two hundred billion, seven hundred twenty-four million, seven hundred twenty-two thousand, one hundred twenty-one".