211101012 has 24 divisors (see below), whose sum is σ = 547299200. Its totient is φ = 70366968.

The previous prime is 211100993. The next prime is 211101013. The reversal of 211101012 is 210101112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211100985 and 211101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977212 + ... + 977427.

Almost surely, 2^211101012 is an apocalyptic number.

It is an amenable number.

211101012 is an abundant number, since it is smaller than the sum of its proper divisors (336198188).

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

211101012 is a wasteful number, since it uses less digits than its factorization.

211101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954652 (or 1954644 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 211101012 is about 14529.3156067311. The cubic root of 211101012 is about 595.4291675739.

Adding to 211101012 its reverse (210101112), we get a palindrome (421202124).

It can be divided in two parts, 21110 and 1012, that added together give a palindrome (22122).

The spelling of 211101012 in words is "two hundred eleven million, one hundred one thousand, twelve".