20110101212 has 6 divisors (see below), whose sum is σ = 35192677128. Its totient is φ = 10055050604.

The previous prime is 20110101199. The next prime is 20110101217. The reversal of 20110101212 is 21210101102.

It is a junction number, because it is equal to n+sod(n) for n = 20110101193 and 20110101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110101217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513762648 + ... + 2513762655.

It is an arithmetic number, because the mean of its divisors is an integer number (5865446188).

Almost surely, 2^20110101212 is an apocalyptic number.

It is an amenable number.

20110101212 is a deficient number, since it is larger than the sum of its proper divisors (15082575916).

20110101212 is a wasteful number, since it uses less digits than its factorization.

20110101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027525307 (or 5027525305 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110101212 its reverse (21210101102), we get a palindrome (41320202314).

The spelling of 20110101212 in words is "twenty billion, one hundred ten million, one hundred one thousand, two hundred twelve".