1021220020002 has 96 divisors (see below), whose sum is σ = 2558978315712. Its totient is φ = 269299368576.

The previous prime is 1021220019871. The next prime is 1021220020003. The reversal of 1021220020002 is 2000200221201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021220020002.

It is not an unprimeable number, because it can be changed into a prime (1021220020003) 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 47 ways as a sum of consecutive naturals, for example, 53142948 + ... + 53162160.

It is an arithmetic number, because the mean of its divisors is an integer number (26656024122).

Almost surely, 2^{1021220020002} is an apocalyptic number.

1021220020002 is an abundant number, since it is smaller than the sum of its proper divisors (1537758295710).

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

1021220020002 is a wasteful number, since it uses less digits than its factorization.

1021220020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33152 (or 33145 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1021220020002 its reverse (2000200221201), we get a palindrome (3021420241203).

The spelling of 1021220020002 in words is "one trillion, twenty-one billion, two hundred twenty million, twenty thousand, two".