211211202104 has 96 divisors (see below), whose sum is σ = 475973055360. Its totient is φ = 87518995200.

The previous prime is 211211202101. The next prime is 211211202107. The reversal of 211211202104 is 401202112112.

It is an interprime number because it is at equal distance from previous prime (211211202101) and next prime (211211202107).

It is a super-2 number, since 2×211211202104² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211202101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14344154 + ... + 14358870.

It is an arithmetic number, because the mean of its divisors is an integer number (4958052660).

Almost surely, 2^211211202104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211211202104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237986527680).

211211202104 is an abundant number, since it is smaller than the sum of its proper divisors (264761853256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211202104 is a wasteful number, since it uses less digits than its factorization.

211211202104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15949 (or 15938 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211211202104 its reverse (401202112112), we get a palindrome (612413314216).

The spelling of 211211202104 in words is "two hundred eleven billion, two hundred eleven million, two hundred two thousand, one hundred four".