1020002101103 has 4 divisors (see below), whose sum is σ = 1032291283128. Its totient is φ = 1007712919080.

The previous prime is 1020002101099. The next prime is 1020002101121. The reversal of 1020002101103 is 3011012000201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020002101103 - 2² = 1020002101099 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 (1020002101123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6144590888 + ... + 6144591053.

It is an arithmetic number, because the mean of its divisors is an integer number (258072820782).

Almost surely, 2^{1020002101103} is an apocalyptic number.

1020002101103 is a deficient number, since it is larger than the sum of its proper divisors (12289182025).

1020002101103 is an equidigital number, since it uses as much as digits as its factorization.

1020002101103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12289182024.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1020002101103 its reverse (3011012000201), we get a palindrome (4031014101304).

The spelling of 1020002101103 in words is "one trillion, twenty billion, two million, one hundred one thousand, one hundred three".