20101211211102 has 32 divisors (see below), whose sum is σ = 45953685394944. Its totient is φ = 5742195732000.

The previous prime is 20101211211089. The next prime is 20101211211119. The reversal of 20101211211102 is 20111211210102.

It is a happy number.

It is a congruent 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, 41735674 + ... + 42214557.

It is an arithmetic number, because the mean of its divisors is an integer number (1436052668592).

Almost surely, 2^{20101211211102} is an apocalyptic number.

20101211211102 is an abundant number, since it is smaller than the sum of its proper divisors (25852474183842).

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

20101211211102 is a wasteful number, since it uses less digits than its factorization.

20101211211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83955944.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20101211211102 its reverse (20111211210102), we get a palindrome (40212422421204).

It can be divided in two parts, 2010121 and 1211102, that added together give a palindrome (3221223).

The spelling of 20101211211102 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred eleven thousand, one hundred two".