1001211020111 has 8 divisors (see below), whose sum is σ = 1034390773248. Its totient is φ = 968086431000.

The previous prime is 1001211020083. The next prime is 1001211020141. The reversal of 1001211020111 is 1110201121001.

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 1001211020111 - 2²⁶ = 1001143911247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001211020092 and 1001211020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001211020141) 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, 13754105 + ... + 13826706.

It is an arithmetic number, because the mean of its divisors is an integer number (129298846656).

Almost surely, 2^{1001211020111} is an apocalyptic number.

1001211020111 is a deficient number, since it is larger than the sum of its proper divisors (33179753137).

1001211020111 is a wasteful number, since it uses less digits than its factorization.

1001211020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27582013.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001211020111 its reverse (1110201121001), we get a palindrome (2111412141112).

The spelling of 1001211020111 in words is "one trillion, one billion, two hundred eleven million, twenty thousand, one hundred eleven".