20001212201010 has 32 divisors (see below), whose sum is σ = 49300285211712. Its totient is φ = 5189503705920.

The previous prime is 20001212200987. The next prime is 20001212201081. The reversal of 20001212201010 is 1010221210002.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9009553936 + ... + 9009556155.

It is an arithmetic number, because the mean of its divisors is an integer number (1540633912866).

Almost surely, 2^{20001212201010} is an apocalyptic number.

20001212201010 is an abundant number, since it is smaller than the sum of its proper divisors (29299073010702).

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

20001212201010 is a wasteful number, since it uses less digits than its factorization.

20001212201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18019110138.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001212201010 its reverse (1010221210002), we get a palindrome (21011433411012).

The spelling of 20001212201010 in words is "twenty trillion, one billion, two hundred twelve million, two hundred one thousand, ten".