211011200211021 has 16 divisors (see below), whose sum is σ = 321541337915904. Its totient is φ = 120577655665584.

The previous prime is 211011200211017. The next prime is 211011200211029. The reversal of 211011200211021 is 120112002110112.

It is a happy number.

It is not a de Polignac number, because 211011200211021 - 2² = 211011200211017 is a prime.

It is a super-2 number, since 2×211011200211021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011200211029) 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, 8577306 + ... + 22261908.

It is an arithmetic number, because the mean of its divisors is an integer number (20096333619744).

Almost surely, 2^{211011200211021} is an apocalyptic number.

211011200211021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211011200211021 is a deficient number, since it is larger than the sum of its proper divisors (110530137704883).

211011200211021 is a wasteful number, since it uses less digits than its factorization.

211011200211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418880.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211011200211021 its reverse (120112002110112), we get a palindrome (331123202321133).

The spelling of 211011200211021 in words is "two hundred eleven trillion, eleven billion, two hundred million, two hundred eleven thousand, twenty-one".