211111021012001 has 16 divisors (see below), whose sum is σ = 237829610899968. Its totient is φ = 185651958441600.

The previous prime is 211111021011949. The next prime is 211111021012009. The reversal of 211111021012001 is 100210120111112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211111021012001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211111021012009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126188660 + ... + 127850693.

It is an arithmetic number, because the mean of its divisors is an integer number (14864350681248).

Almost surely, 2^{211111021012001} is an apocalyptic number.

It is an amenable number.

211111021012001 is a deficient number, since it is larger than the sum of its proper divisors (26718589887967).

211111021012001 is a wasteful number, since it uses less digits than its factorization.

211111021012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254041832.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211111021012001 its reverse (100210120111112), we get a palindrome (311321141123113).

The spelling of 211111021012001 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-one million, twelve thousand, one".