10101021211 has 16 divisors (see below), whose sum is σ = 10489562496. Its totient is φ = 9720000000.

The previous prime is 10101021181. The next prime is 10101021241. The reversal of 10101021211 is 11212010101.

It is an interprime number because it is at equal distance from previous prime (10101021181) and next prime (10101021241).

It is a 9-Lehmer number, since φ(10101021211) divides (10101021211-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 10101021211 - 2⁷ = 10101021083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10101021241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117711 + ... + 1126711.

It is an arithmetic number, because the mean of its divisors is an integer number (655597656).

Almost surely, 2^10101021211 is an apocalyptic number.

10101021211 is a deficient number, since it is larger than the sum of its proper divisors (388541285).

10101021211 is a wasteful number, since it uses less digits than its factorization.

10101021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10101021211 its reverse (11212010101), we get a palindrome (21313031312).

It can be divided in two parts, 101010 and 21211, that added together give a palindrome (122221).

The spelling of 10101021211 in words is "ten billion, one hundred one million, twenty-one thousand, two hundred eleven".