10121131211 has 4 divisors (see below), whose sum is σ = 10134293400. Its totient is φ = 10107969024.

The previous prime is 10121131201. The next prime is 10121131213. The reversal of 10121131211 is 11213112101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11213112101 = 1229 ⋅9123769.

It is a cyclic number.

It is not a de Polignac number, because 10121131211 - 2¹⁸ = 10120869067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121131213) 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, 6579941 + ... + 6581478.

It is an arithmetic number, because the mean of its divisors is an integer number (2533573350).

Almost surely, 2^10121131211 is an apocalyptic number.

10121131211 is a deficient number, since it is larger than the sum of its proper divisors (13162189).

10121131211 is an equidigital number, since it uses as much as digits as its factorization.

10121131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162188.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10121131211 its reverse (11213112101), we get a palindrome (21334243312).

The spelling of 10121131211 in words is "ten billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred eleven".