1202120111028 has 24 divisors (see below), whose sum is σ = 2873360266560. Its totient is φ = 390933369280.

The previous prime is 1202120111011. The next prime is 1202120111029. The reversal of 1202120111028 is 8201110212021.

It is a super-3 number, since 3×1202120111028³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1202120110995 and 1202120111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202120111029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221666288 + ... + 1221667271.

It is an arithmetic number, because the mean of its divisors is an integer number (119723344440).

Almost surely, 2^{1202120111028} is an apocalyptic number.

It is an amenable number.

1202120111028 is an abundant number, since it is smaller than the sum of its proper divisors (1671240155532).

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

1202120111028 is a wasteful number, since it uses less digits than its factorization.

1202120111028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443333607 (or 2443333605 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 1202120111028 its reverse (8201110212021), we get a palindrome (9403230323049).

The spelling of 1202120111028 in words is "one trillion, two hundred two billion, one hundred twenty million, one hundred eleven thousand, twenty-eight".