10202120012 has 24 divisors (see below), whose sum is σ = 20594939904. Its totient is φ = 4331472912.

The previous prime is 10202120011. The next prime is 10202120017. The reversal of 10202120012 is 21002120201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10202119975 and 10202120002.

It is not an unprimeable number, because it can be changed into a prime (10202120011) 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, 1699628 + ... + 1705619.

It is an arithmetic number, because the mean of its divisors is an integer number (858122496).

Almost surely, 2^10202120012 is an apocalyptic number.

It is an amenable number.

10202120012 is an abundant number, since it is smaller than the sum of its proper divisors (10392819892).

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

10202120012 is a wasteful number, since it uses less digits than its factorization.

10202120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405365 (or 3405363 counting only the distinct ones).

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

Adding to 10202120012 its reverse (21002120201), we get a palindrome (31204240213).

The spelling of 10202120012 in words is "ten billion, two hundred two million, one hundred twenty thousand, twelve".