2011121210 has 48 divisors (see below), whose sum is σ = 4221477000. Its totient is φ = 687818880.

The previous prime is 2011121201. The next prime is 2011121269. The reversal of 2011121210 is 121211102.

It can be written as a sum of positive squares in 4 ways, for example, as 550887841 + 1460233369 = 23471^2 + 38213^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2011121191 and 2011121200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201416 + ... + 211164.

Almost surely, 2^2011121210 is an apocalyptic number.

2011121210 is an abundant number, since it is smaller than the sum of its proper divisors (2210355790).

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

2011121210 is a wasteful number, since it uses less digits than its factorization.

2011121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191 (or 10184 counting only the distinct ones).

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

The square root of 2011121210 is about 44845.5260867793. The cubic root of 2011121210 is about 1262.2520424060.

Adding to 2011121210 its reverse (121211102), we get a palindrome (2132332312).

The spelling of 2011121210 in words is "two billion, eleven million, one hundred twenty-one thousand, two hundred ten".