2011121212302 has 80 divisors (see below), whose sum is σ = 4752009884160. Its totient is φ = 633962315088.

The previous prime is 2011121212279. The next prime is 2011121212333. The reversal of 2011121212302 is 2032121211102.

2011121212302 is a `hidden beast` number, since 20 + 11 + 121 + 212 + 302 = 666.

It is a super-2 number, since 2×2011121212302² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1152643 + ... + 2313185.

It is an arithmetic number, because the mean of its divisors is an integer number (59400123552).

Almost surely, 2^{2011121212302} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011121212302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376004942080).

2011121212302 is an abundant number, since it is smaller than the sum of its proper divisors (2740888671858).

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

2011121212302 is a wasteful number, since it uses less digits than its factorization.

2011121212302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161139 (or 1161130 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2011121212302 its reverse (2032121211102), we get a palindrome (4043242423404).

The spelling of 2011121212302 in words is "two trillion, eleven billion, one hundred twenty-one million, two hundred twelve thousand, three hundred two".