211121120001 has 32 divisors (see below), whose sum is σ = 313564606848. Its totient is φ = 125278064640.

The previous prime is 211121119999. The next prime is 211121120017. The reversal of 211121120001 is 100021121112.

It is not a de Polignac number, because 211121120001 - 2¹ = 211121119999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211121120201) 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, 10185 + ... + 649881.

It is an arithmetic number, because the mean of its divisors is an integer number (9798893964).

Almost surely, 2^211121120001 is an apocalyptic number.

It is an amenable number.

211121120001 is a deficient number, since it is larger than the sum of its proper divisors (102443486847).

211121120001 is a wasteful number, since it uses less digits than its factorization.

211121120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639921.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211121120001 its reverse (100021121112), we get a palindrome (311142241113).

It can be divided in two parts, 2111 and 21120001, that added together give a palindrome (21122112).

The spelling of 211121120001 in words is "two hundred eleven billion, one hundred twenty-one million, one hundred twenty thousand, one".