1211002212011 has 8 divisors (see below), whose sum is σ = 1223167091664. Its totient is φ = 1198840759200.

The previous prime is 1211002211963. The next prime is 1211002212083. The reversal of 1211002212011 is 1102122001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211002212011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211002712011) 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, 143420 + ... + 1562873.

It is an arithmetic number, because the mean of its divisors is an integer number (152895886458).

Almost surely, 2^{1211002212011} is an apocalyptic number.

1211002212011 is a deficient number, since it is larger than the sum of its proper divisors (12164879653).

1211002212011 is a wasteful number, since it uses less digits than its factorization.

1211002212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713421.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211002212011 its reverse (1102122001121), we get a palindrome (2313124213132).

The spelling of 1211002212011 in words is "one trillion, two hundred eleven billion, two million, two hundred twelve thousand, eleven".