11211022001 has 32 divisors (see below), whose sum is σ = 12339081216. Its totient is φ = 10161216000.

The previous prime is 11211021961. The next prime is 11211022003. The reversal of 11211022001 is 10022011211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211022003) 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, 3164291 + ... + 3167831.

It is an arithmetic number, because the mean of its divisors is an integer number (385596288).

Almost surely, 2^11211022001 is an apocalyptic number.

It is an amenable number.

11211022001 is a deficient number, since it is larger than the sum of its proper divisors (1128059215).

11211022001 is a wasteful number, since it uses less digits than its factorization.

11211022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11211022001 its reverse (10022011211), we get a palindrome (21233033212).

The spelling of 11211022001 in words is "eleven billion, two hundred eleven million, twenty-two thousand, one".