10202121201002 has 4 divisors (see below), whose sum is σ = 15303181801506. Its totient is φ = 5101060600500.

The previous prime is 10202121200981. The next prime is 10202121201007. The reversal of 10202121201002 is 20010212120201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7022600700361 + 3179520500641 = 2650019^2 + 1783121^2 .

It is not an unprimeable number, because it can be changed into a prime (10202121201007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550530300249 + ... + 2550530300252.

Almost surely, 2^{10202121201002} is an apocalyptic number.

10202121201002 is a deficient number, since it is larger than the sum of its proper divisors (5101060600504).

10202121201002 is an equidigital number, since it uses as much as digits as its factorization.

10202121201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101060600503.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10202121201002 its reverse (20010212120201), we get a palindrome (30212333321203).

The spelling of 10202121201002 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred one thousand, two".