102011101020121 has 4 divisors (see below), whose sum is σ = 102012928806052. Its totient is φ = 102009273234192.

The previous prime is 102011101020119. The next prime is 102011101020151. The reversal of 102011101020121 is 121020101110201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56213465934096 + 45797635086025 = 7497564^2 + 6767395^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011101020121 - 2¹ = 102011101020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102011101020151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913809246 + ... + 913920871.

It is an arithmetic number, because the mean of its divisors is an integer number (25503232201513).

Almost surely, 2^{102011101020121} is an apocalyptic number.

It is an amenable number.

102011101020121 is a deficient number, since it is larger than the sum of its proper divisors (1827785931).

102011101020121 is an equidigital number, since it uses as much as digits as its factorization.

102011101020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827785930.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102011101020121 its reverse (121020101110201), we get a palindrome (223031202130322).

The spelling of 102011101020121 in words is "one hundred two trillion, eleven billion, one hundred one million, twenty thousand, one hundred twenty-one".