20101210312211 has 8 divisors (see below), whose sum is σ = 23075828880384. Its totient is φ = 17152346017800.

The previous prime is 20101210312201. The next prime is 20101210312219. The reversal of 20101210312211 is 11221301210102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20101210312211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20101210312211.

It is not an unprimeable number, because it can be changed into a prime (20101210312219) 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, 6438566765 + ... + 6438569886.

It is an arithmetic number, because the mean of its divisors is an integer number (2884478610048).

Almost surely, 2^{20101210312211} is an apocalyptic number.

20101210312211 is a deficient number, since it is larger than the sum of its proper divisors (2974618568173).

20101210312211 is a wasteful number, since it uses less digits than its factorization.

20101210312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12877136881.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20101210312211 its reverse (11221301210102), we get a palindrome (31322511522313).

The spelling of 20101210312211 in words is "twenty trillion, one hundred one billion, two hundred ten million, three hundred twelve thousand, two hundred eleven".