100020112012121 has 16 divisors (see below), whose sum is σ = 123316377208704. Its totient is φ = 79166069309184.

The previous prime is 100020112012109. The next prime is 100020112012267. The reversal of 100020112012121 is 121210211020001.

It is a de Polignac number, because none of the positive numbers 2^k-100020112012121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020112012096 and 100020112012105.

It is not an unprimeable number, because it can be changed into a prime (100020112032121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7929287495 + ... + 7929300108.

It is an arithmetic number, because the mean of its divisors is an integer number (7707273575544).

Almost surely, 2^{100020112012121} is an apocalyptic number.

It is an amenable number.

100020112012121 is a deficient number, since it is larger than the sum of its proper divisors (23296265196583).

100020112012121 is a wasteful number, since it uses less digits than its factorization.

100020112012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15858587680.

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

Adding to 100020112012121 its reverse (121210211020001), we get a palindrome (221230323032122).

The spelling of 100020112012121 in words is "one hundred trillion, twenty billion, one hundred twelve million, twelve thousand, one hundred twenty-one".