211001021011005 has 16 divisors (see below), whose sum is σ = 337623884138880. Its totient is φ = 112526461032128.

The previous prime is 211001021010991. The next prime is 211001021011013. The reversal of 211001021011005 is 500110120100112.

It is a cyclic number.

It is not a de Polignac number, because 211001021011005 - 2⁷ = 211001021010877 is a prime.

It is a super-2 number, since 2×211001021011005² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463317345 + ... + 463772534.

It is an arithmetic number, because the mean of its divisors is an integer number (21101492758680).

Almost surely, 2^{211001021011005} is an apocalyptic number.

It is an amenable number.

211001021011005 is a deficient number, since it is larger than the sum of its proper divisors (126622863127875).

211001021011005 is a wasteful number, since it uses less digits than its factorization.

211001021011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927105060.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 211001021011005 its reverse (500110120100112), we get a palindrome (711111141111117).

The spelling of 211001021011005 in words is "two hundred eleven trillion, one billion, twenty-one million, eleven thousand, five".