20012100202101 has 32 divisors (see below), whose sum is σ = 30781581320448. Its totient is φ = 11327991091200.

The previous prime is 20012100202099. The next prime is 20012100202163. The reversal of 20012100202101 is 10120200121002.

It is not a de Polignac number, because 20012100202101 - 2¹ = 20012100202099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012100202181) 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, 1932505 + ... + 6615041.

It is an arithmetic number, because the mean of its divisors is an integer number (961924416264).

Almost surely, 2^{20012100202101} is an apocalyptic number.

20012100202101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012100202101 is a deficient number, since it is larger than the sum of its proper divisors (10769481118347).

20012100202101 is a wasteful number, since it uses less digits than its factorization.

20012100202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684461.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012100202101 its reverse (10120200121002), we get a palindrome (30132300323103).

The spelling of 20012100202101 in words is "twenty trillion, twelve billion, one hundred million, two hundred two thousand, one hundred one".