20011210212 has 48 divisors (see below), whose sum is σ = 54370092672. Its totient is φ = 5609610240.

The previous prime is 20011210189. The next prime is 20011210213. The reversal of 20011210212 is 21201211002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20011210213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242989 + ... + 2251892.

It is an arithmetic number, because the mean of its divisors is an integer number (1132710264).

Almost surely, 2^20011210212 is an apocalyptic number.

It is an amenable number.

20011210212 is an abundant number, since it is smaller than the sum of its proper divisors (34358882460).

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

20011210212 is a wasteful number, since it uses less digits than its factorization.

20011210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494948 (or 4494946 counting only the distinct ones).

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

Adding to 20011210212 its reverse (21201211002), we get a palindrome (41212421214).

The spelling of 20011210212 in words is "twenty billion, eleven million, two hundred ten thousand, two hundred twelve".