10111220201 has 8 divisors (see below), whose sum is σ = 10129556904. Its totient is φ = 10092902400.

The previous prime is 10111220143. The next prime is 10111220219. The reversal of 10111220201 is 10202211101.

It can be written as a sum of positive squares in 4 ways, for example, as 1591930201 + 8519290000 = 39899^2 + 92300^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10111220201 - 2⁶ = 10111220137 is a prime.

It is a super-2 number, since 2×10111220201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111220501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429265 + ... + 1436321.

It is an arithmetic number, because the mean of its divisors is an integer number (1266194613).

Almost surely, 2^10111220201 is an apocalyptic number.

It is an amenable number.

10111220201 is a deficient number, since it is larger than the sum of its proper divisors (18336703).

10111220201 is a wasteful number, since it uses less digits than its factorization.

10111220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451.

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

Adding to 10111220201 its reverse (10202211101), we get a palindrome (20313431302).

The spelling of 10111220201 in words is "ten billion, one hundred eleven million, two hundred twenty thousand, two hundred one".