20101200212 has 6 divisors (see below), whose sum is σ = 35177100378. Its totient is φ = 10050600104.

The previous prime is 20101200179. The next prime is 20101200241. The reversal of 20101200212 is 21200210102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10299408196 + 9801792016 = 101486^2 + 99004^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20101200193 and 20101200202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512650023 + ... + 2512650030.

It is an arithmetic number, because the mean of its divisors is an integer number (5862850063).

Almost surely, 2^20101200212 is an apocalyptic number.

It is an amenable number.

20101200212 is a deficient number, since it is larger than the sum of its proper divisors (15075900166).

20101200212 is a wasteful number, since it uses less digits than its factorization.

20101200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025300057 (or 5025300055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20101200212 its reverse (21200210102), we get a palindrome (41301410314).

The spelling of 20101200212 in words is "twenty billion, one hundred one million, two hundred thousand, two hundred twelve".