1020221021102 has 4 divisors (see below), whose sum is σ = 1530331531656. Its totient is φ = 510110510550.

The previous prime is 1020221021101. The next prime is 1020221021179. The reversal of 1020221021102 is 2011201220201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255055255274 + ... + 255055255277.

It is an arithmetic number, because the mean of its divisors is an integer number (382582882914).

Almost surely, 2^{1020221021102} is an apocalyptic number.

1020221021102 is a deficient number, since it is larger than the sum of its proper divisors (510110510554).

1020221021102 is an equidigital number, since it uses as much as digits as its factorization.

1020221021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510110510553.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020221021102 its reverse (2011201220201), we get a palindrome (3031422241303).

The spelling of 1020221021102 in words is "one trillion, twenty billion, two hundred twenty-one million, twenty-one thousand, one hundred two".