1020020011012 has 24 divisors (see below), whose sum is σ = 1853159497560. Its totient is φ = 490671041280.

The previous prime is 1020020010991. The next prime is 1020020011027. The reversal of 1020020011012 is 2101100200201.

It can be written as a sum of positive squares in 4 ways, for example, as 559435186116 + 460584824896 = 747954^2 + 678664^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1020020011012.

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, 15613803 + ... + 15678994.

It is an arithmetic number, because the mean of its divisors is an integer number (77214979065).

Almost surely, 2^{1020020011012} is an apocalyptic number.

It is an amenable number.

1020020011012 is a deficient number, since it is larger than the sum of its proper divisors (833139486548).

1020020011012 is a wasteful number, since it uses less digits than its factorization.

1020020011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31293111 (or 31293109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020020011012 its reverse (2101100200201), we get a palindrome (3121120211213).

The spelling of 1020020011012 in words is "one trillion, twenty billion, twenty million, eleven thousand, twelve".