100121121012111 has 32 divisors (see below), whose sum is σ = 139304006317056. Its totient is φ = 63910788480000.

The previous prime is 100121121012071. The next prime is 100121121012119. The reversal of 100121121012111 is 111210121121001.

It is not a de Polignac number, because 100121121012111 - 2³¹ = 100118973528463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121121012119) 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, 20182090 + ... + 24648711.

It is an arithmetic number, because the mean of its divisors is an integer number (4353250197408).

Almost surely, 2^{100121121012111} is an apocalyptic number.

100121121012111 is a deficient number, since it is larger than the sum of its proper divisors (39182885304945).

100121121012111 is a wasteful number, since it uses less digits than its factorization.

100121121012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44831183.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 100121121012111 its reverse (111210121121001), we get a palindrome (211331242133112).

The spelling of 100121121012111 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve thousand, one hundred eleven".