10111221401 has 2 divisors, whose sum is σ = 10111221402. Its totient is φ = 10111221400.

The previous prime is 10111221397. The next prime is 10111221457. The reversal of 10111221401 is 10412211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7114753801 + 2996467600 = 84349^2 + 54740^2 .

It is an emirp because it is prime and its reverse (10412211101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10111221401 - 2² = 10111221397 is a prime.

It is not a weakly prime, because it can be changed into another prime (10111221481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055610700 + 5055610701.

It is an arithmetic number, because the mean of its divisors is an integer number (5055610701).

Almost surely, 2^10111221401 is an apocalyptic number.

It is an amenable number.

10111221401 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111221401 is an equidigital number, since it uses as much as digits as its factorization.

10111221401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10111221401 its reverse (10412211101), we get a palindrome (20523432502).

The spelling of 10111221401 in words is "ten billion, one hundred eleven million, two hundred twenty-one thousand, four hundred one".