1020012209012 has 12 divisors (see below), whose sum is σ = 1791657134820. Its totient is φ = 508110170496.

The previous prime is 1020012208931. The next prime is 1020012209063. The reversal of 1020012209012 is 2109022100201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 573312466276 + 446699742736 = 757174^2 + 668356^2 .

It is a super-2 number, since 2×1020012209012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473982293 + ... + 473984444.

It is an arithmetic number, because the mean of its divisors is an integer number (149304761235).

Almost surely, 2^{1020012209012} is an apocalyptic number.

It is an amenable number.

1020012209012 is a deficient number, since it is larger than the sum of its proper divisors (771644925808).

1020012209012 is a wasteful number, since it uses less digits than its factorization.

1020012209012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947967010 (or 947967008 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1020012209012 its reverse (2109022100201), we get a palindrome (3129034309213).

The spelling of 1020012209012 in words is "one trillion, twenty billion, twelve million, two hundred nine thousand, twelve".