1100021002121 has 8 divisors (see below), whose sum is σ = 1115562253824. Its totient is φ = 1084481083840.

The previous prime is 1100021002081. The next prime is 1100021002169. The reversal of 1100021002121 is 1212001200011.

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 1100021002121 - 2¹⁸ = 1100020739977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100021007121) 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, 1390760 + ... + 2033286.

It is an arithmetic number, because the mean of its divisors is an integer number (139445281728).

Almost surely, 2^{1100021002121} is an apocalyptic number.

It is an amenable number.

1100021002121 is a deficient number, since it is larger than the sum of its proper divisors (15541251703).

1100021002121 is an equidigital number, since it uses as much as digits as its factorization.

1100021002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666711.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100021002121 its reverse (1212001200011), we get a palindrome (2312022202132).

The spelling of 1100021002121 in words is "one trillion, one hundred billion, twenty-one million, two thousand, one hundred twenty-one".