1020002221012 has 36 divisors (see below), whose sum is σ = 1887336409728. Its totient is φ = 482071489200.

The previous prime is 1020002221003. The next prime is 1020002221013. The reversal of 1020002221012 is 2101222000201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020002220983 and 1020002221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002221013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2920164 + ... + 3250747.

Almost surely, 2^{1020002221012} is an apocalyptic number.

It is an amenable number.

1020002221012 is a deficient number, since it is larger than the sum of its proper divisors (867334188716).

1020002221012 is a wasteful number, since it uses less digits than its factorization.

1020002221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171020 (or 6170987 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020002221012 its reverse (2101222000201), we get a palindrome (3121224221213).

The spelling of 1020002221012 in words is "one trillion, twenty billion, two million, two hundred twenty-one thousand, twelve".