10202111010121 has 16 divisors (see below), whose sum is σ = 10789697802240. Its totient is φ = 9619607483280.

The previous prime is 10202111010101. The next prime is 10202111010151. The reversal of 10202111010121 is 12101011120201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10202111010121 - 2¹¹ = 10202111008073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10202111010101) 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 15 ways as a sum of consecutive naturals, for example, 18330486 + ... + 18878848.

It is an arithmetic number, because the mean of its divisors is an integer number (674356112640).

Almost surely, 2^{10202111010121} is an apocalyptic number.

It is an amenable number.

10202111010121 is a deficient number, since it is larger than the sum of its proper divisors (587586792119).

10202111010121 is a wasteful number, since it uses less digits than its factorization.

10202111010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552996.

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

Adding to 10202111010121 its reverse (12101011120201), we get a palindrome (22303122130322).

The spelling of 10202111010121 in words is "ten trillion, two hundred two billion, one hundred eleven million, ten thousand, one hundred twenty-one".