2012121010 has 8 divisors (see below), whose sum is σ = 3621817836. Its totient is φ = 804848400.

The previous prime is 2012120987. The next prime is 2012121011. The reversal of 2012121010 is 101212102.

It can be written as a sum of positive squares in 2 ways, for example, as 1966301649 + 45819361 = 44343^2 + 6769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 201212101 = 2012121010 / (2 + 0 + 1 + 2 + 1 + 2 + 1 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (2012121011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100606041 + ... + 100606060.

Almost surely, 2^2012121010 is an apocalyptic number.

2012121010 is a deficient number, since it is larger than the sum of its proper divisors (1609696826).

2012121010 is a wasteful number, since it uses less digits than its factorization.

2012121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201212108.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2012121010 is about 44856.6718560350. The cubic root of 2012121010 is about 1262.4611779063.

Adding to 2012121010 its reverse (101212102), we get a palindrome (2113333112).

The spelling of 2012121010 in words is "two billion, twelve million, one hundred twenty-one thousand, ten".