1011100202121 has 16 divisors (see below), whose sum is σ = 1350380868800. Its totient is φ = 672944010048.

The previous prime is 1011100202117. The next prime is 1011100202137. The reversal of 1011100202121 is 1212020011101.

It is not a de Polignac number, because 1011100202121 - 2² = 1011100202117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1011100202097 and 1011100202106.

It is not an unprimeable number, because it can be changed into a prime (1011100202141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4764015 + ... + 4971723.

It is an arithmetic number, because the mean of its divisors is an integer number (84398804300).

Almost surely, 2^{1011100202121} is an apocalyptic number.

It is an amenable number.

1011100202121 is a deficient number, since it is larger than the sum of its proper divisors (339280666679).

1011100202121 is a wasteful number, since it uses less digits than its factorization.

1011100202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210408.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011100202121 its reverse (1212020011101), we get a palindrome (2223120213222).

The spelling of 1011100202121 in words is "one trillion, eleven billion, one hundred million, two hundred two thousand, one hundred twenty-one".