10211111210121 has 8 divisors (see below), whose sum is σ = 13615014130944. Its totient is φ = 6807307881360.

The previous prime is 10211111210119. The next prime is 10211111210137. The reversal of 10211111210121 is 12101211111201.

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

It is not a de Polignac number, because 10211111210121 - 2¹ = 10211111210119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211111210121.

It is not an unprimeable number, because it can be changed into a prime (10211111210621) 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, 24658450 + ... + 25069131.

It is an arithmetic number, because the mean of its divisors is an integer number (1701876766368).

Almost surely, 2^{10211111210121} is an apocalyptic number.

It is an amenable number.

10211111210121 is a deficient number, since it is larger than the sum of its proper divisors (3403902920823).

10211111210121 is an equidigital number, since it uses as much as digits as its factorization.

10211111210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49796031.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10211111210121 its reverse (12101211111201), we get a palindrome (22312322321322).

The spelling of 10211111210121 in words is "ten trillion, two hundred eleven billion, one hundred eleven million, two hundred ten thousand, one hundred twenty-one".