20210212011 has 32 divisors (see below), whose sum is σ = 31451201280. Its totient is φ = 11413699200.

The previous prime is 20210212007. The next prime is 20210212019. The reversal of 20210212011 is 11021201202.

It is not a de Polignac number, because 20210212011 - 2² = 20210212007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20210212019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225960 + ... + 302453.

It is an arithmetic number, because the mean of its divisors is an integer number (982850040).

Almost surely, 2^20210212011 is an apocalyptic number.

20210212011 is a deficient number, since it is larger than the sum of its proper divisors (11240989269).

20210212011 is a wasteful number, since it uses less digits than its factorization.

20210212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528507.

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

Adding to 20210212011 its reverse (11021201202), we get a palindrome (31231413213).

It can be divided in two parts, 20210 and 212011, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 20210212011 in words is "twenty billion, two hundred ten million, two hundred twelve thousand, eleven".