100121220001211 has 32 divisors (see below), whose sum is σ = 107894345760000. Its totient is φ = 92559995799552.

The previous prime is 100121220001097. The next prime is 100121220001247. The reversal of 100121220001211 is 112100022121001.

It is not a de Polignac number, because 100121220001211 - 2¹⁸ = 100121219739067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121220006211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7643418140 + ... + 7643431238.

It is an arithmetic number, because the mean of its divisors is an integer number (3371698305000).

Almost surely, 2^{100121220001211} is an apocalyptic number.

100121220001211 is a deficient number, since it is larger than the sum of its proper divisors (7773125758789).

100121220001211 is a wasteful number, since it uses less digits than its factorization.

100121220001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18731.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100121220001211 its reverse (112100022121001), we get a palindrome (212221242122212).

It can be divided in two parts, 1001 and 21220001211, that added together give a palindrome (21220002212).

The spelling of 100121220001211 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty million, one thousand, two hundred eleven".