211121001010 has 8 divisors (see below), whose sum is σ = 380017801836. Its totient is φ = 84448400400.

The previous prime is 211121000983. The next prime is 211121001017. The reversal of 211121001010 is 10100121112.

211121001010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 201384640081 + 9736360929 = 448759^2 + 98673^2 .

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: 21112100101 = 211121001010 / (2 + 1 + 1 + 1 + 2 + 1 + 0 + 0 + 1 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (211121001017) 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, 10556050041 + ... + 10556050060.

Almost surely, 2^211121001010 is an apocalyptic number.

211121001010 is a deficient number, since it is larger than the sum of its proper divisors (168896800826).

211121001010 is a wasteful number, since it uses less digits than its factorization.

211121001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21112100108.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211121001010 its reverse (10100121112), we get a palindrome (221221122122).

The spelling of 211121001010 in words is "two hundred eleven billion, one hundred twenty-one million, one thousand, ten".