1102203212121 has 24 divisors (see below), whose sum is σ = 1736866930656. Its totient is φ = 667978151040.

The previous prime is 1102203212057. The next prime is 1102203212167. The reversal of 1102203212121 is 1212123022011.

1102203212121 is a `hidden beast` number, since 1 + 1 + 0 + 220 + 321 + 2 + 121 = 666.

It is not a de Polignac number, because 1102203212121 - 2⁶ = 1102203212057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102203212094 and 1102203212103.

It is not an unprimeable number, because it can be changed into a prime (1102203212321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2826801 + ... + 3192993.

It is an arithmetic number, because the mean of its divisors is an integer number (72369455444).

Almost surely, 2^{1102203212121} is an apocalyptic number.

1102203212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102203212121 is a deficient number, since it is larger than the sum of its proper divisors (634663718535).

1102203212121 is a wasteful number, since it uses less digits than its factorization.

1102203212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396613 (or 396610 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1102203212121 its reverse (1212123022011), we get a palindrome (2314326234132).

The spelling of 1102203212121 in words is "one trillion, one hundred two billion, two hundred three million, two hundred twelve thousand, one hundred twenty-one".