10121001021211 has 4 divisors (see below), whose sum is σ = 10219263167152. Its totient is φ = 10022738875272.

The previous prime is 10121001021169. The next prime is 10121001021253. The reversal of 10121001021211 is 11212010012101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (10121001021169) and next prime (10121001021253).

It is a cyclic number.

It is not a de Polignac number, because 10121001021211 - 2¹⁷ = 10121000890139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121001021191 and 10121001021200.

It is not an unprimeable number, because it can be changed into a prime (10121001021281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49131072816 + ... + 49131073021.

It is an arithmetic number, because the mean of its divisors is an integer number (2554815791788).

Almost surely, 2^{10121001021211} is an apocalyptic number.

10121001021211 is a deficient number, since it is larger than the sum of its proper divisors (98262145941).

10121001021211 is an equidigital number, since it uses as much as digits as its factorization.

10121001021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98262145940.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10121001021211 its reverse (11212010012101), we get a palindrome (21333011033312).

The spelling of 10121001021211 in words is "ten trillion, one hundred twenty-one billion, one million, twenty-one thousand, two hundred eleven".