1220021020002 has 32 divisors (see below), whose sum is σ = 2546330913792. Its totient is φ = 388961640144.

The previous prime is 1220021019961. The next prime is 1220021020003. The reversal of 1220021020002 is 2000201200221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220021020002.

It is not an unprimeable number, because it can be changed into a prime (1220021020003) 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, 1448553 + ... + 2130339.

It is an arithmetic number, because the mean of its divisors is an integer number (79572841056).

Almost surely, 2^{1220021020002} is an apocalyptic number.

1220021020002 is an abundant number, since it is smaller than the sum of its proper divisors (1326309893790).

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

1220021020002 is a wasteful number, since it uses less digits than its factorization.

1220021020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694782.

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

Adding to 1220021020002 its reverse (2000201200221), we get a palindrome (3220222220223).

The spelling of 1220021020002 in words is "one trillion, two hundred twenty billion, twenty-one million, twenty thousand, two".