10202121212028 has 24 divisors (see below), whose sum is σ = 23978708254032. Its totient is φ = 3375884390784.

The previous prime is 10202121212027. The next prime is 10202121212119. The reversal of 10202121212028 is 82021212120201.

It is a junction number, because it is equal to n+sod(n) for n = 10202121211989 and 10202121212007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121212027) 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, 3102833275 + ... + 3102836562.

It is an arithmetic number, because the mean of its divisors is an integer number (999112843918).

Almost surely, 2^{10202121212028} is an apocalyptic number.

It is an amenable number.

10202121212028 is an abundant number, since it is smaller than the sum of its proper divisors (13776587042004).

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

10202121212028 is a wasteful number, since it uses less digits than its factorization.

10202121212028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205669981 (or 6205669979 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 10202121212028 its reverse (82021212120201), we get a palindrome (92223333332229).

The spelling of 10202121212028 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred twelve thousand, twenty-eight".