10202121101121 has 32 divisors (see below), whose sum is σ = 14650188408960. Its totient is φ = 6301873073664.

The previous prime is 10202121101089. The next prime is 10202121101143. The reversal of 10202121101121 is 12110112120201.

It is a happy number.

It is not a de Polignac number, because 10202121101121 - 2⁵ = 10202121101089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202121101121.

It is not an unprimeable number, because it can be changed into a prime (10202121101171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21472855 + ... + 21942828.

It is an arithmetic number, because the mean of its divisors is an integer number (457818387780).

Almost surely, 2^{10202121101121} is an apocalyptic number.

It is an amenable number.

10202121101121 is a deficient number, since it is larger than the sum of its proper divisors (4448067307839).

10202121101121 is a wasteful number, since it uses less digits than its factorization.

10202121101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43415825.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10202121101121 its reverse (12110112120201), we get a palindrome (22312233221322).

The spelling of 10202121101121 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty-one".