207152121220 has 24 divisors (see below), whose sum is σ = 474566678208. Its totient is φ = 75328044000.

The previous prime is 207152121179. The next prime is 207152121247. The reversal of 207152121220 is 22121251702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470800056 + ... + 470800495.

It is an arithmetic number, because the mean of its divisors is an integer number (19773611592).

Almost surely, 2^207152121220 is an apocalyptic number.

207152121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207152121220 is an abundant number, since it is smaller than the sum of its proper divisors (267414556988).

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

207152121220 is a wasteful number, since it uses less digits than its factorization.

207152121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941600571 (or 941600569 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 207152121220 its reverse (22121251702), we get a palindrome (229273372922).

The spelling of 207152121220 in words is "two hundred seven billion, one hundred fifty-two million, one hundred twenty-one thousand, two hundred twenty".