1101202122121 has 4 divisors (see below), whose sum is σ = 1116287082772. Its totient is φ = 1086117161472.

The previous prime is 1101202122107. The next prime is 1101202122127. The reversal of 1101202122121 is 1212212021011.

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 705390015625 + 395812106496 = 839875^2 + 629136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101202122121 - 2¹⁹ = 1101201597833 is a prime.

It is a super-2 number, since 2×1101202122121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101202122095 and 1101202122104.

It is not an unprimeable number, because it can be changed into a prime (1101202122127) 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, 7542480216 + ... + 7542480361.

It is an arithmetic number, because the mean of its divisors is an integer number (279071770693).

Almost surely, 2^{1101202122121} is an apocalyptic number.

It is an amenable number.

1101202122121 is a deficient number, since it is larger than the sum of its proper divisors (15084960651).

1101202122121 is an equidigital number, since it uses as much as digits as its factorization.

1101202122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084960650.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1101202122121 its reverse (1212212021011), we get a palindrome (2313414143132).

The spelling of 1101202122121 in words is "one trillion, one hundred one billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-one".