20121002210 has 16 divisors (see below), whose sum is σ = 36988396416. Its totient is φ = 7877158128.

The previous prime is 20121002201. The next prime is 20121002219. The reversal of 20121002210 is 1220012102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20121002201) and next prime (20121002219).

It is a junction number, because it is equal to n+sod(n) for n = 20121002191 and 20121002200.

It is not an unprimeable number, because it can be changed into a prime (20121002219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21404852 + ... + 21405791.

It is an arithmetic number, because the mean of its divisors is an integer number (2311774776).

Almost surely, 2^20121002210 is an apocalyptic number.

20121002210 is a deficient number, since it is larger than the sum of its proper divisors (16867394206).

20121002210 is a wasteful number, since it uses less digits than its factorization.

20121002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42810697.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20121002210 its reverse (1220012102), we get a palindrome (21341014312).

The spelling of 20121002210 in words is "twenty billion, one hundred twenty-one million, two thousand, two hundred ten".