10202121202212 has 72 divisors (see below), whose sum is σ = 26180386831872. Its totient is φ = 3349408008000.

The previous prime is 10202121202199. The next prime is 10202121202213. The reversal of 10202121202212 is 21220212120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10202121202213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6650718 + ... + 8039669.

It is an arithmetic number, because the mean of its divisors is an integer number (363616483776).

Almost surely, 2^{10202121202212} is an apocalyptic number.

10202121202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10202121202212 is an abundant number, since it is smaller than the sum of its proper divisors (15978265629660).

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

10202121202212 is a wasteful number, since it uses less digits than its factorization.

10202121202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14690689 (or 14690684 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10202121202212 its reverse (21220212120201), we get a palindrome (31422333322413).

The spelling of 10202121202212 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred two thousand, two hundred twelve".