20110101002121 has 32 divisors (see below), whose sum is σ = 29201800320000. Its totient is φ = 12236310344448.

The previous prime is 20110101002119. The next prime is 20110101002171. The reversal of 20110101002121 is 12120010101102.

It is not a de Polignac number, because 20110101002121 - 2¹ = 20110101002119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110101002097 and 20110101002106.

It is not an unprimeable number, because it can be changed into a prime (20110101002171) 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, 2901846 + ... + 6974303.

It is an arithmetic number, because the mean of its divisors is an integer number (912556260000).

Almost surely, 2^{20110101002121} is an apocalyptic number.

It is an amenable number.

20110101002121 is a deficient number, since it is larger than the sum of its proper divisors (9091699317879).

20110101002121 is a wasteful number, since it uses less digits than its factorization.

20110101002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9876753.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20110101002121 its reverse (12120010101102), we get a palindrome (32230111103223).

The spelling of 20110101002121 in words is "twenty trillion, one hundred ten billion, one hundred one million, two thousand, one hundred twenty-one".