1021103213211 has 12 divisors (see below), whose sum is σ = 1479579633792. Its totient is φ = 678588043056.

The previous prime is 1021103213167. The next prime is 1021103213213. The reversal of 1021103213211 is 1123123011201.

1021103213211 is a `hidden beast` number, since 1 + 0 + 21 + 1 + 0 + 321 + 321 + 1 = 666.

It is not a de Polignac number, because 1021103213211 - 2¹⁵ = 1021103180443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021103213213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178949691 + ... + 178955396.

It is an arithmetic number, because the mean of its divisors is an integer number (123298302816).

Almost surely, 2^{1021103213211} is an apocalyptic number.

1021103213211 is a deficient number, since it is larger than the sum of its proper divisors (458476420581).

1021103213211 is a wasteful number, since it uses less digits than its factorization.

1021103213211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357905410 (or 357905407 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021103213211 its reverse (1123123011201), we get a palindrome (2144226224412).

The spelling of 1021103213211 in words is "one trillion, twenty-one billion, one hundred three million, two hundred thirteen thousand, two hundred eleven".