1012111201026 has 32 divisors (see below), whose sum is σ = 2249297129280. Its totient is φ = 337346231328.

The previous prime is 1012111200979. The next prime is 1012111201027. The reversal of 1012111201026 is 6201021112101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1012111201027) 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 15 ways as a sum of consecutive naturals, for example, 97470 + ... + 1426086.

It is an arithmetic number, because the mean of its divisors is an integer number (70290535290).

Almost surely, 2^{1012111201026} is an apocalyptic number.

1012111201026 is an abundant number, since it is smaller than the sum of its proper divisors (1237185928254).

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

1012111201026 is a wasteful number, since it uses less digits than its factorization.

1012111201026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342735 (or 1342729 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1012111201026 its reverse (6201021112101), we get a palindrome (7213132313127).

The spelling of 1012111201026 in words is "one trillion, twelve billion, one hundred eleven million, two hundred one thousand, twenty-six".