20101212212210 has 8 divisors (see below), whose sum is σ = 36182181981996. Its totient is φ = 8040484884880.

The previous prime is 20101212212203. The next prime is 20101212212261. The reversal of 20101212212210 is 1221221210102.

It can be written as a sum of positive squares in 2 ways, for example, as 20092725565081 + 8486647129 = 4482491^2 + 92123^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005060610601 + ... + 1005060610620.

Almost surely, 2^{20101212212210} is an apocalyptic number.

20101212212210 is a deficient number, since it is larger than the sum of its proper divisors (16080969769786).

20101212212210 is a wasteful number, since it uses less digits than its factorization.

20101212212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010121221228.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20101212212210 its reverse (1221221210102), we get a palindrome (21322433422312).

The spelling of 20101212212210 in words is "twenty trillion, one hundred one billion, two hundred twelve million, two hundred twelve thousand, two hundred ten".