1020221101002 has 128 divisors (see below), whose sum is σ = 2194311555072. Its totient is φ = 315497952000.

The previous prime is 1020221101001. The next prime is 1020221101019. The reversal of 1020221101002 is 2001011220201.

It is not an unprimeable number, because it can be changed into a prime (1020221101001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 489783453 + ... + 489785535.

It is an arithmetic number, because the mean of its divisors is an integer number (17143059024).

Almost surely, 2^{1020221101002} is an apocalyptic number.

1020221101002 is an abundant number, since it is smaller than the sum of its proper divisors (1174090454070).

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

1020221101002 is a wasteful number, since it uses less digits than its factorization.

1020221101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020221101002 its reverse (2001011220201), we get a palindrome (3021232321203).

The spelling of 1020221101002 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred one thousand, two".