1020120011012 has 6 divisors (see below), whose sum is σ = 1785210019278. Its totient is φ = 510060005504.

The previous prime is 1020120010991. The next prime is 1020120011047. The reversal of 1020120011012 is 2101100210201.

It can be written as a sum of positive squares in only one way, i.e., 1020067680256 + 52330756 = 1009984^2 + 7234^2 .

It is a super-3 number, since 3×1020120011012³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020120010984 and 1020120011002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127515001373 + ... + 127515001380.

It is an arithmetic number, because the mean of its divisors is an integer number (297535003213).

Almost surely, 2^{1020120011012} is an apocalyptic number.

It is an amenable number.

1020120011012 is a deficient number, since it is larger than the sum of its proper divisors (765090008266).

1020120011012 is a wasteful number, since it uses less digits than its factorization.

1020120011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255030002757 (or 255030002755 counting only the distinct ones).

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

Adding to 1020120011012 its reverse (2101100210201), we get a palindrome (3121220221213).

The spelling of 1020120011012 in words is "one trillion, twenty billion, one hundred twenty million, eleven thousand, twelve".