211211021012 has 48 divisors (see below), whose sum is σ = 381607511040. Its totient is φ = 102235081728.

The previous prime is 211211020991. The next prime is 211211021027. The reversal of 211211021012 is 210120112112.

It is a super-2 number, since 2×211211021012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34548068 + ... + 34554180.

It is an arithmetic number, because the mean of its divisors is an integer number (7950156480).

Almost surely, 2^211211021012 is an apocalyptic number.

It is an amenable number.

211211021012 is a deficient number, since it is larger than the sum of its proper divisors (170396490028).

211211021012 is a wasteful number, since it uses less digits than its factorization.

211211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211211021012 its reverse (210120112112), we get a palindrome (421331133124).

The spelling of 211211021012 in words is "two hundred eleven billion, two hundred eleven million, twenty-one thousand, twelve".