211011021011021 has 16 divisors (see below), whose sum is σ = 263190767239680. Its totient is φ = 164354114908080.

The previous prime is 211011021011009. The next prime is 211011021011027. The reversal of 211011021011021 is 120110120110112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211011021011021 is a prime.

It is a super-2 number, since 2×211011021011021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211011021010987 and 211011021011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011021011027) 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, 583629011 + ... + 583990448.

It is an arithmetic number, because the mean of its divisors is an integer number (16449422952480).

Almost surely, 2^{211011021011021} is an apocalyptic number.

It is an amenable number.

211011021011021 is a deficient number, since it is larger than the sum of its proper divisors (52179746228659).

211011021011021 is a wasteful number, since it uses less digits than its factorization.

211011021011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167621824.

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

Adding to 211011021011021 its reverse (120110120110112), we get a palindrome (331121141121133).

Subtracting from 211011021011021 its reverse (120110120110112), we obtain a palindrome (90900900900909).

The spelling of 211011021011021 in words is "two hundred eleven trillion, eleven billion, twenty-one million, eleven thousand, twenty-one".