2111011110072 has 48 divisors (see below), whose sum is σ = 5717578080240. Its totient is φ = 703638822528.

The previous prime is 2111011110071. The next prime is 2111011110113. The reversal of 2111011110072 is 2700111101112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111011110071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 988293 + ... + 2280075.

It is an arithmetic number, because the mean of its divisors is an integer number (119116210005).

Almost surely, 2^{2111011110072} is an apocalyptic number.

It is an amenable number.

2111011110072 is an abundant number, since it is smaller than the sum of its proper divisors (3606566970168).

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

2111011110072 is a wasteful number, since it uses less digits than its factorization.

2111011110072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314492 (or 1314485 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 18.

Adding to 2111011110072 its reverse (2700111101112), we get a palindrome (4811122211184).

The spelling of 2111011110072 in words is "two trillion, one hundred eleven billion, eleven million, one hundred ten thousand, seventy-two".