1021020121102 has 4 divisors (see below), whose sum is σ = 1531530181656. Its totient is φ = 510510060550.

The previous prime is 1021020121081. The next prime is 1021020121139. The reversal of 1021020121102 is 2011210201201.

1021020121102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 255255030274 + ... + 255255030277.

It is an arithmetic number, because the mean of its divisors is an integer number (382882545414).

Almost surely, 2^{1021020121102} is an apocalyptic number.

1021020121102 is a deficient number, since it is larger than the sum of its proper divisors (510510060554).

1021020121102 is an equidigital number, since it uses as much as digits as its factorization.

1021020121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510510060553.

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

Adding to 1021020121102 its reverse (2011210201201), we get a palindrome (3032230322303).

The spelling of 1021020121102 in words is "one trillion, twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred two".