1101210202121 has 4 divisors (see below), whose sum is σ = 1165987272852. Its totient is φ = 1036433131392.

The previous prime is 1101210202117. The next prime is 1101210202177. The reversal of 1101210202121 is 1212020121011.

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 782198736400 + 319011465721 = 884420^2 + 564811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101210202121 - 2² = 1101210202117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101210202096 and 1101210202105.

It is not an unprimeable number, because it can be changed into a prime (1101210202111) 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, 32388535340 + ... + 32388535373.

It is an arithmetic number, because the mean of its divisors is an integer number (291496818213).

Almost surely, 2^{1101210202121} is an apocalyptic number.

It is an amenable number.

1101210202121 is a deficient number, since it is larger than the sum of its proper divisors (64777070731).

1101210202121 is an equidigital number, since it uses as much as digits as its factorization.

1101210202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64777070730.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1101210202121 its reverse (1212020121011), we get a palindrome (2313230323132).

The spelling of 1101210202121 in words is "one trillion, one hundred one billion, two hundred ten million, two hundred two thousand, one hundred twenty-one".