1012111251015 has 8 divisors (see below), whose sum is σ = 1619378001648. Its totient is φ = 539792667200.

The previous prime is 1012111251013. The next prime is 1012111251059. The reversal of 1012111251015 is 5101521112101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012111251015 - 2¹ = 1012111251013 is a prime.

It is a super-2 number, since 2×1012111251015² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012111250982 and 1012111251000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111251013) 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 7 ways as a sum of consecutive naturals, for example, 33737041686 + ... + 33737041715.

It is an arithmetic number, because the mean of its divisors is an integer number (202422250206).

Almost surely, 2^{1012111251015} is an apocalyptic number.

1012111251015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1012111251015 is a deficient number, since it is larger than the sum of its proper divisors (607266750633).

1012111251015 is an equidigital number, since it uses as much as digits as its factorization.

1012111251015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67474083409.

The product of its (nonzero) digits is 100, while the sum is 21.

Adding to 1012111251015 its reverse (5101521112101), we get a palindrome (6113632363116).

The spelling of 1012111251015 in words is "one trillion, twelve billion, one hundred eleven million, two hundred fifty-one thousand, fifteen".