10121121200121 has 8 divisors (see below), whose sum is σ = 13547337327264. Its totient is φ = 6721159603200.

The previous prime is 10121121200089. The next prime is 10121121200143. The reversal of 10121121200121 is 12100212112101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10121121200121 - 2⁵ = 10121121200089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121121200121.

It is not an unprimeable number, because it can be changed into a prime (10121121200161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6563631655 + ... + 6563633196.

It is an arithmetic number, because the mean of its divisors is an integer number (1693417165908).

Almost surely, 2^{10121121200121} is an apocalyptic number.

It is an amenable number.

10121121200121 is a deficient number, since it is larger than the sum of its proper divisors (3426216127143).

10121121200121 is a wasteful number, since it uses less digits than its factorization.

10121121200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13127265111.

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

Adding to 10121121200121 its reverse (12100212112101), we get a palindrome (22221333312222).

The spelling of 10121121200121 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".