1020121102102 has 4 divisors (see below), whose sum is σ = 1530181653156. Its totient is φ = 510060551050.

The previous prime is 1020121102093. The next prime is 1020121102139. The reversal of 1020121102102 is 2012011210201.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255030275524 + ... + 255030275527.

It is an arithmetic number, because the mean of its divisors is an integer number (382545413289).

Almost surely, 2^{1020121102102} is an apocalyptic number.

1020121102102 is a deficient number, since it is larger than the sum of its proper divisors (510060551054).

1020121102102 is an equidigital number, since it uses as much as digits as its factorization.

1020121102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510060551053.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020121102102 its reverse (2012011210201), we get a palindrome (3032132312303).

The spelling of 1020121102102 in words is "one trillion, twenty billion, one hundred twenty-one million, one hundred two thousand, one hundred two".