11211010212201 has 16 divisors (see below), whose sum is σ = 15827772268224. Its totient is φ = 7034153245184.

The previous prime is 11211010212187. The next prime is 11211010212203. The reversal of 11211010212201 is 10221201011211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11211010212201 - 2²¹ = 11211008115049 is a prime.

It is a super-2 number, since 2×11211010212201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11211010212203) 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, 1453251 + ... + 4953176.

It is an arithmetic number, because the mean of its divisors is an integer number (989235766764).

Almost surely, 2^{11211010212201} is an apocalyptic number.

It is an amenable number.

11211010212201 is a deficient number, since it is larger than the sum of its proper divisors (4616762056023).

11211010212201 is a wasteful number, since it uses less digits than its factorization.

11211010212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440760.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211010212201 its reverse (10221201011211), we get a palindrome (21432211223412).

The spelling of 11211010212201 in words is "eleven trillion, two hundred eleven billion, ten million, two hundred twelve thousand, two hundred one".