211200121011 has 16 divisors (see below), whose sum is σ = 320556706560. Its totient is φ = 122434852320.

The previous prime is 211200120991. The next prime is 211200121031. The reversal of 211200121011 is 110121002112.

It is an interprime number because it is at equal distance from previous prime (211200120991) and next prime (211200121031).

It is not a de Polignac number, because 211200121011 - 2⁷ = 211200120883 is a prime.

It is a super-2 number, since 2×211200121011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211200121031) 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, 139129756 + ... + 139131273.

It is an arithmetic number, because the mean of its divisors is an integer number (20034794160).

Almost surely, 2^211200121011 is an apocalyptic number.

211200121011 is a deficient number, since it is larger than the sum of its proper divisors (109356585549).

211200121011 is a wasteful number, since it uses less digits than its factorization.

211200121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278261066.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211200121011 its reverse (110121002112), we get a palindrome (321321123123).

The spelling of 211200121011 in words is "two hundred eleven billion, two hundred million, one hundred twenty-one thousand, eleven".