11021211211201 has 16 divisors (see below), whose sum is σ = 11129720949504. Its totient is φ = 10912898191104.

The previous prime is 11021211211147. The next prime is 11021211211217. The reversal of 11021211211201 is 10211211212011.

It is a cyclic number.

It is not a de Polignac number, because 11021211211201 - 2²¹ = 11021209114049 is a prime.

It is a super-2 number, since 2×11021211211201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021211271201) 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, 1235141926 + ... + 1235150848.

It is an arithmetic number, because the mean of its divisors is an integer number (695607559344).

Almost surely, 2^{11021211211201} is an apocalyptic number.

It is an amenable number.

11021211211201 is a deficient number, since it is larger than the sum of its proper divisors (108509738303).

11021211211201 is a wasteful number, since it uses less digits than its factorization.

11021211211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18600.

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

Adding to 11021211211201 its reverse (10211211212011), we get a palindrome (21232422423212).

The spelling of 11021211211201 in words is "eleven trillion, twenty-one billion, two hundred eleven million, two hundred eleven thousand, two hundred one".