1001012111012 has 48 divisors (see below), whose sum is σ = 1859218932480. Its totient is φ = 470256710400.

The previous prime is 1001012111009. The next prime is 1001012111051. The reversal of 1001012111012 is 2101112101001.

It is a super-2 number, since 2×1001012111012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001012110984 and 1001012111002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4949312 + ... + 5147592.

It is an arithmetic number, because the mean of its divisors is an integer number (38733727760).

Almost surely, 2^{1001012111012} is an apocalyptic number.

It is an amenable number.

1001012111012 is a deficient number, since it is larger than the sum of its proper divisors (858206821468).

1001012111012 is a wasteful number, since it uses less digits than its factorization.

1001012111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198852 (or 198850 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001012111012 its reverse (2101112101001), we get a palindrome (3102124212013).

The spelling of 1001012111012 in words is "one trillion, one billion, twelve million, one hundred eleven thousand, twelve".