211001022012 has 96 divisors (see below), whose sum is σ = 565575494400. Its totient is φ = 60551539200.

The previous prime is 211001021983. The next prime is 211001022041. The reversal of 211001022012 is 210220100112.

It is an interprime number because it is at equal distance from previous prime (211001021983) and next prime (211001022041).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7281312 + ... + 7310232.

It is an arithmetic number, because the mean of its divisors is an integer number (5891411400).

Almost surely, 2^211001022012 is an apocalyptic number.

211001022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211001022012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282787747200).

211001022012 is an abundant number, since it is smaller than the sum of its proper divisors (354574472388).

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

211001022012 is a wasteful number, since it uses less digits than its factorization.

211001022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31867 (or 31865 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211001022012 its reverse (210220100112), we get a palindrome (421221122124).

The spelling of 211001022012 in words is "two hundred eleven billion, one million, twenty-two thousand, twelve".