10212111012121 has 8 divisors (see below), whose sum is σ = 10315742393088. Its totient is φ = 10108529070000.

The previous prime is 10212111012113. The next prime is 10212111012151. The reversal of 10212111012121 is 12121011121201.

10212111012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10212111012121 - 2³ = 10212111012113 is a prime.

It is a super-2 number, since 2×10212111012121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212111012095 and 10212111012104.

It is not an unprimeable number, because it can be changed into a prime (10212111012101) 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, 11944425 + ... + 12770806.

It is an arithmetic number, because the mean of its divisors is an integer number (1289467799136).

Almost surely, 2^{10212111012121} is an apocalyptic number.

It is an amenable number.

10212111012121 is a deficient number, since it is larger than the sum of its proper divisors (103631380967).

10212111012121 is a wasteful number, since it uses less digits than its factorization.

10212111012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24719423.

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

Adding to 10212111012121 its reverse (12121011121201), we get a palindrome (22333122133322).

The spelling of 10212111012121 in words is "ten trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, one hundred twenty-one".