2012020121028 has 48 divisors (see below), whose sum is σ = 4750002613440. Its totient is φ = 662783007744.

The previous prime is 2012020121021. The next prime is 2012020121129. The reversal of 2012020121028 is 8201210202102.

It is a junction number, because it is equal to n+sod(n) for n = 2012020120995 and 2012020121013.

It is not an unprimeable number, because it can be changed into a prime (2012020121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497451 + ... + 2503277.

It is an arithmetic number, because the mean of its divisors is an integer number (98958387780).

Almost surely, 2^{2012020121028} is an apocalyptic number.

It is an amenable number.

2012020121028 is an abundant number, since it is smaller than the sum of its proper divisors (2737982492412).

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

2012020121028 is a wasteful number, since it uses less digits than its factorization.

2012020121028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007796 (or 1007794 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 2012020121028 in words is "two trillion, twelve billion, twenty million, one hundred twenty-one thousand, twenty-eight".