1211102021003 has 8 divisors (see below), whose sum is σ = 1417875537120. Its totient is φ = 1012768240320.

The previous prime is 1211102020981. The next prime is 1211102021009. The reversal of 1211102021003 is 3001202011121.

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 1211102021003 - 2¹⁶ = 1211101955467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211102021009) 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, 2109933548 + ... + 2109934121.

It is an arithmetic number, because the mean of its divisors is an integer number (177234442140).

Almost surely, 2^{1211102021003} is an apocalyptic number.

1211102021003 is a deficient number, since it is larger than the sum of its proper divisors (206773516117).

1211102021003 is an equidigital number, since it uses as much as digits as its factorization.

1211102021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219867717.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1211102021003 its reverse (3001202011121), we get a palindrome (4212304032124).

The spelling of 1211102021003 in words is "one trillion, two hundred eleven billion, one hundred two million, twenty-one thousand, three".