1100120212121 has 8 divisors (see below), whose sum is σ = 1272428197824. Its totient is φ = 931599215280.

The previous prime is 1100120212073. The next prime is 1100120212127. The reversal of 1100120212121 is 1212120210011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1100120212121 - 2⁶ = 1100120212057 is a prime.

It is a super-2 number, since 2×1100120212121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100120212096 and 1100120212105.

It is not an unprimeable number, because it can be changed into a prime (1100120212127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946746590 + ... + 946747751.

It is an arithmetic number, because the mean of its divisors is an integer number (159053524728).

Almost surely, 2^{1100120212121} is an apocalyptic number.

It is an amenable number.

1100120212121 is a deficient number, since it is larger than the sum of its proper divisors (172307985703).

1100120212121 is an equidigital number, since it uses as much as digits as its factorization.

1100120212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893494431.

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

Adding to 1100120212121 its reverse (1212120210011), we get a palindrome (2312240422132).

The spelling of 1100120212121 in words is "one trillion, one hundred billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty-one".