211210120021011 has 128 divisors (see below), whose sum is σ = 310272541286400. Its totient is φ = 127357419018240.

The previous prime is 211210120020997. The next prime is 211210120021013. The reversal of 211210120021011 is 110120021012112.

It is a happy number.

It is not a de Polignac number, because 211210120021011 - 2¹³ = 211210120012819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211210120021013) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 49428998571 + ... + 49429002843.

It is an arithmetic number, because the mean of its divisors is an integer number (2424004228800).

Almost surely, 2^{211210120021011} is an apocalyptic number.

211210120021011 is a deficient number, since it is larger than the sum of its proper divisors (99062421265389).

211210120021011 is a wasteful number, since it uses less digits than its factorization.

211210120021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7401.

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

Adding to 211210120021011 its reverse (110120021012112), we get a palindrome (321330141033123).

The spelling of 211210120021011 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty million, twenty-one thousand, eleven".