11211010021211 has 32 divisors (see below), whose sum is σ = 15053542253568. Its totient is φ = 8063329069440.

The previous prime is 11211010021181. The next prime is 11211010021259. The reversal of 11211010021211 is 11212001011211.

It is a cyclic number.

It is not a de Polignac number, because 11211010021211 - 2¹⁴ = 11211010004827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211010021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15065090 + ... + 15791736.

It is an arithmetic number, because the mean of its divisors is an integer number (470423195424).

Almost surely, 2^{11211010021211} is an apocalyptic number.

11211010021211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11211010021211 is a deficient number, since it is larger than the sum of its proper divisors (3842532232357).

11211010021211 is a wasteful number, since it uses less digits than its factorization.

11211010021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742091.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11211010021211 its reverse (11212001011211), we get a palindrome (22423011032422).

The spelling of 11211010021211 in words is "eleven trillion, two hundred eleven billion, ten million, twenty-one thousand, two hundred eleven".