11112111020987 has 16 divisors (see below), whose sum is σ = 12100734201600. Its totient is φ = 10163891273760.

The previous prime is 11112111020981. The next prime is 11112111021001. The reversal of 11112111020987 is 78902011121111.

It is not a de Polignac number, because 11112111020987 - 2¹² = 11112111016891 is a prime.

It is a super-2 number, since 2×11112111020987² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112111020981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15747812 + ... + 16438302.

It is an arithmetic number, because the mean of its divisors is an integer number (756295887600).

Almost surely, 2^{11112111020987} is an apocalyptic number.

11112111020987 is a deficient number, since it is larger than the sum of its proper divisors (988623180613).

11112111020987 is a wasteful number, since it uses less digits than its factorization.

11112111020987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719746.

The product of its (nonzero) digits is 2016, while the sum is 35.

The spelling of 11112111020987 in words is "eleven trillion, one hundred twelve billion, one hundred eleven million, twenty thousand, nine hundred eighty-seven".