1001102121211 has 4 divisors (see below), whose sum is σ = 1002435147424. Its totient is φ = 999769095000.

The previous prime is 1001102121169. The next prime is 1001102121223. The reversal of 1001102121211 is 1121212011001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001102121211 - 2¹⁵ = 1001102088443 is a prime.

It is a super-2 number, since 2×1001102121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001102121191 and 1001102121200.

It is not an unprimeable number, because it can be changed into a prime (1001102121511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666511980 + ... + 666513481.

It is an arithmetic number, because the mean of its divisors is an integer number (250608786856).

Almost surely, 2^{1001102121211} is an apocalyptic number.

1001102121211 is a deficient number, since it is larger than the sum of its proper divisors (1333026213).

1001102121211 is an equidigital number, since it uses as much as digits as its factorization.

1001102121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333026212.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1001102121211 its reverse (1121212011001), we get a palindrome (2122314132212).

The spelling of 1001102121211 in words is "one trillion, one billion, one hundred two million, one hundred twenty-one thousand, two hundred eleven".