10121121211211 has 8 divisors (see below), whose sum is σ = 10212565206480. Its totient is φ = 10029710138112.

The previous prime is 10121121211169. The next prime is 10121121211237. The reversal of 10121121211211 is 11211212112101.

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 10121121211211 - 2⁶ = 10121121211147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121121211211.

It is not an unprimeable number, because it can be changed into a prime (10121121211241) 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, 7612706 + ... + 8842823.

It is an arithmetic number, because the mean of its divisors is an integer number (1276570650810).

Almost surely, 2^{10121121211211} is an apocalyptic number.

10121121211211 is a deficient number, since it is larger than the sum of its proper divisors (91443995269).

10121121211211 is a wasteful number, since it uses less digits than its factorization.

10121121211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16461085.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 10121121211211 its reverse (11211212112101), we get a palindrome (21332333323312).

The spelling of 10121121211211 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred eleven".