1001122020012 has 24 divisors (see below), whose sum is σ = 2342213994736. Its totient is φ = 332812680768.

The previous prime is 1001122019969. The next prime is 1001122020023. The reversal of 1001122020012 is 2100202211001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1001122020012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111827743 + ... + 111836694.

Almost surely, 2^{1001122020012} is an apocalyptic number.

1001122020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001122020012 is an abundant number, since it is smaller than the sum of its proper divisors (1341091974724).

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

1001122020012 is a wasteful number, since it uses less digits than its factorization.

1001122020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223664817 (or 223664815 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001122020012 its reverse (2100202211001), we get a palindrome (3101324231013).

The spelling of 1001122020012 in words is "one trillion, one billion, one hundred twenty-two million, twenty thousand, twelve".