10202121110101 has 4 divisors (see below), whose sum is σ = 10531221791104. Its totient is φ = 9873020429100.

The previous prime is 10202121110057. The next prime is 10202121110107. The reversal of 10202121110101 is 10101112120201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202121110101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121110107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164550340455 + ... + 164550340516.

It is an arithmetic number, because the mean of its divisors is an integer number (2632805447776).

Almost surely, 2^{10202121110101} is an apocalyptic number.

It is an amenable number.

10202121110101 is a deficient number, since it is larger than the sum of its proper divisors (329100681003).

10202121110101 is an equidigital number, since it uses as much as digits as its factorization.

10202121110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329100681002.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10202121110101 its reverse (10101112120201), we get a palindrome (20303233230302).

The spelling of 10202121110101 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred ten thousand, one hundred one".