1020200111012 has 24 divisors (see below), whose sum is σ = 1890916163640. Its totient is φ = 479955663360.

The previous prime is 1020200110997. The next prime is 1020200111023. The reversal of 1020200111012 is 2101110020201.

It can be written as a sum of positive squares in 4 ways, for example, as 254879580736 + 765320530276 = 504856^2 + 874826^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020200110984 and 1020200111002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1926539 + ... + 2398322.

It is an arithmetic number, because the mean of its divisors is an integer number (78788173485).

Almost surely, 2^{1020200111012} is an apocalyptic number.

It is an amenable number.

1020200111012 is a deficient number, since it is larger than the sum of its proper divisors (870716052628).

1020200111012 is a wasteful number, since it uses less digits than its factorization.

1020200111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328351 (or 4328349 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020200111012 its reverse (2101110020201), we get a palindrome (3121310131213).

The spelling of 1020200111012 in words is "one trillion, twenty billion, two hundred million, one hundred eleven thousand, twelve".