1131111001995 has 64 divisors (see below), whose sum is σ = 2017961164800. Its totient is φ = 537182553600.

The previous prime is 1131111001963. The next prime is 1131111002011. The reversal of 1131111001995 is 5991001111311.

It is a happy number.

It is not a de Polignac number, because 1131111001995 - 2⁵ = 1131111001963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6422016 + ... + 6595794.

It is an arithmetic number, because the mean of its divisors is an integer number (31530643200).

Almost surely, 2^{1131111001995} is an apocalyptic number.

1131111001995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1131111001995 is a deficient number, since it is larger than the sum of its proper divisors (886850162805).

1131111001995 is a wasteful number, since it uses less digits than its factorization.

1131111001995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174980.

The product of its (nonzero) digits is 1215, while the sum is 33.

The spelling of 1131111001995 in words is "one trillion, one hundred thirty-one billion, one hundred eleven million, one thousand, nine hundred ninety-five".