133121020210 has 8 divisors (see below), whose sum is σ = 239617836396. Its totient is φ = 53248408080.

The previous prime is 133121020183. The next prime is 133121020211. The reversal of 133121020210 is 12020121331.

It can be written as a sum of positive squares in 2 ways, for example, as 133100199241 + 20820969 = 364829^2 + 4563^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (133121020211) 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, 6656051001 + ... + 6656051020.

Almost surely, 2^133121020210 is an apocalyptic number.

133121020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133121020210 is a deficient number, since it is larger than the sum of its proper divisors (106496816186).

133121020210 is a wasteful number, since it uses less digits than its factorization.

133121020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13312102028.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 133121020210 its reverse (12020121331), we get a palindrome (145141141541).

The spelling of 133121020210 in words is "one hundred thirty-three billion, one hundred twenty-one million, twenty thousand, two hundred ten".