20000212101 has 12 divisors (see below), whose sum is σ = 29669984812. Its totient is φ = 12973110336.

The previous prime is 20000212087. The next prime is 20000212121. The reversal of 20000212101 is 10121200002.

It can be written as a sum of positive squares in 2 ways, for example, as 12565289025 + 7434923076 = 112095^2 + 86226^2 .

It is not a de Polignac number, because 20000212101 - 2⁹ = 20000211589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000212121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30030016 + ... + 30030681.

Almost surely, 2^20000212101 is an apocalyptic number.

It is an amenable number.

20000212101 is a deficient number, since it is larger than the sum of its proper divisors (9669772711).

20000212101 is a wasteful number, since it uses less digits than its factorization.

20000212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60060740 (or 60060737 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20000212101 its reverse (10121200002), we get a palindrome (30121412103).

The spelling of 20000212101 in words is "twenty billion, two hundred twelve thousand, one hundred one".