211121012001001 has 32 divisors (see below), whose sum is σ = 223774677734400. Its totient is φ = 198624741779520.

The previous prime is 211121012000993. The next prime is 211121012001037. The reversal of 211121012001001 is 100100210121112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211121012001001 - 2³ = 211121012000993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211121012001101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8094186706 + ... + 8094212788.

It is an arithmetic number, because the mean of its divisors is an integer number (6992958679200).

Almost surely, 2^{211121012001001} is an apocalyptic number.

It is an amenable number.

211121012001001 is a deficient number, since it is larger than the sum of its proper divisors (12653665733399).

211121012001001 is a wasteful number, since it uses less digits than its factorization.

211121012001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29389.

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

Adding to 211121012001001 its reverse (100100210121112), we get a palindrome (311221222122113).

The spelling of 211121012001001 in words is "two hundred eleven trillion, one hundred twenty-one billion, twelve million, one thousand, one".