10120202121 has 16 divisors (see below), whose sum is σ = 13661690688. Its totient is φ = 6663096000.

The previous prime is 10120202117. The next prime is 10120202129. The reversal of 10120202121 is 12120202101.

It is not a de Polignac number, because 10120202121 - 2² = 10120202117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10120202097 and 10120202106.

It is not an unprimeable number, because it can be changed into a prime (10120202129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78226 + ... + 162356.

It is an arithmetic number, because the mean of its divisors is an integer number (853855668).

Almost surely, 2^10120202121 is an apocalyptic number.

It is an amenable number.

10120202121 is a deficient number, since it is larger than the sum of its proper divisors (3541488567).

10120202121 is a wasteful number, since it uses less digits than its factorization.

10120202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84632.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10120202121 its reverse (12120202101), we get a palindrome (22240404222).

The spelling of 10120202121 in words is "ten billion, one hundred twenty million, two hundred two thousand, one hundred twenty-one".