20121201001210 has 16 divisors (see below), whose sum is σ = 36218471488776. Its totient is φ = 8048411581248.

The previous prime is 20121201001123. The next prime is 20121201001219. The reversal of 20121201001210 is 1210010212102.

It can be written as a sum of positive squares in 4 ways, for example, as 13811755317889 + 6309445683321 = 3716417^2 + 2511861^2 .

It is not an unprimeable number, because it can be changed into a prime (20121201001219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7365957 + ... + 9721096.

Almost surely, 2^{20121201001210} is an apocalyptic number.

20121201001210 is a deficient number, since it is larger than the sum of its proper divisors (16097270487566).

20121201001210 is a wasteful number, since it uses less digits than its factorization.

20121201001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17204817.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121201001210 its reverse (1210010212102), we get a palindrome (21331211213312).

The spelling of 20121201001210 in words is "twenty trillion, one hundred twenty-one billion, two hundred one million, one thousand, two hundred ten".