111021011948 has 48 divisors (see below), whose sum is σ = 242914097664. Its totient is φ = 43132362240.

The previous prime is 111021011947. The next prime is 111021011999. The reversal of 111021011948 is 849110120111.

It is a self number, because there is not a number n which added to its sum of digits gives 111021011948.

It is not an unprimeable number, because it can be changed into a prime (111021011947) 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, 401840 + ... + 619287.

It is an arithmetic number, because the mean of its divisors is an integer number (5060710368).

Almost surely, 2^111021011948 is an apocalyptic number.

It is an amenable number.

111021011948 is an abundant number, since it is smaller than the sum of its proper divisors (131893085716).

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

111021011948 is a wasteful number, since it uses less digits than its factorization.

111021011948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021502 (or 1021500 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 111021011948 in words is "one hundred eleven billion, twenty-one million, eleven thousand, nine hundred forty-eight".