1021020220103 has 8 divisors (see below), whose sum is σ = 1099612858848. Its totient is φ = 942435098784.

The previous prime is 1021020220039. The next prime is 1021020220117. The reversal of 1021020220103 is 3010220201201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021020220103 - 2⁶ = 1021020220039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020223103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595675 + ... + 2142012.

It is an arithmetic number, because the mean of its divisors is an integer number (137451607356).

Almost surely, 2^{1021020220103} is an apocalyptic number.

1021020220103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021020220103 is a deficient number, since it is larger than the sum of its proper divisors (78592638745).

1021020220103 is a wasteful number, since it uses less digits than its factorization.

1021020220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758713.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021020220103 its reverse (3010220201201), we get a palindrome (4031240421304).

The spelling of 1021020220103 in words is "one trillion, twenty-one billion, twenty million, two hundred twenty thousand, one hundred three".