101050111155 has 128 divisors (see below), whose sum is σ = 199339278336. Its totient is φ = 42732748800.

The previous prime is 101050111121. The next prime is 101050111193. The reversal of 101050111155 is 551111050101.

It is not a de Polignac number, because 101050111155 - 2¹⁹ = 101049586867 is a prime.

It is a super-2 number, since 2×101050111155² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

101050111155 is a modest number, since divided by 111155 gives 101050 as remainder.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 6570675 + ... + 6586035.

It is an arithmetic number, because the mean of its divisors is an integer number (1557338112).

Almost surely, 2^101050111155 is an apocalyptic number.

101050111155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101050111155 is a deficient number, since it is larger than the sum of its proper divisors (98289167181).

101050111155 is a wasteful number, since it uses less digits than its factorization.

101050111155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15497.

The product of its (nonzero) digits is 125, while the sum is 21.

Adding to 101050111155 its reverse (551111050101), we get a palindrome (652161161256).

The spelling of 101050111155 in words is "one hundred one billion, fifty million, one hundred eleven thousand, one hundred fifty-five".