20210211211011 has 32 divisors (see below), whose sum is σ = 27507989456640. Its totient is φ = 13194786096000.

The previous prime is 20210211210953. The next prime is 20210211211031. The reversal of 20210211211011 is 11011211201202.

It is a happy number.

It is not a de Polignac number, because 20210211211011 - 2¹⁷ = 20210211079939 is a prime.

It is a super-2 number, since 2×20210211211011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20210211211031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49816936 + ... + 50220986.

It is an arithmetic number, because the mean of its divisors is an integer number (859624670520).

Almost surely, 2^{20210211211011} is an apocalyptic number.

20210211211011 is a deficient number, since it is larger than the sum of its proper divisors (7297778245629).

20210211211011 is a wasteful number, since it uses less digits than its factorization.

20210211211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405187.

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

Adding to 20210211211011 its reverse (11011211201202), we get a palindrome (31221422412213).

The spelling of 20210211211011 in words is "twenty trillion, two hundred ten billion, two hundred eleven million, two hundred eleven thousand, eleven".