20110212 has 36 divisors (see below), whose sum is σ = 51143820. Its totient is φ = 6662592.

The previous prime is 20110183. The next prime is 20110217. The reversal of 20110212 is 21201102.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 7322436 = 3576^2 + 2706^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 20110194 and 20110203.

It is not an unprimeable number, because it can be changed into a prime (20110217) 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, 4614 + ... + 7842.

Almost surely, 2^20110212 is an apocalyptic number.

It is an amenable number.

20110212 is an abundant number, since it is smaller than the sum of its proper divisors (31033608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20110212 is a wasteful number, since it uses less digits than its factorization.

20110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412 (or 3407 counting only the distinct ones).

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

The square root of 20110212 is about 4484.4411023003. The cubic root of 20110212 is about 271.9394509110.

Adding to 20110212 its reverse (21201102), we get a palindrome (41311314).

The spelling of 20110212 in words is "twenty million, one hundred ten thousand, two hundred twelve".