221111201001143 has 2 divisors, whose sum is σ = 221111201001144. Its totient is φ = 221111201001142.

The previous prime is 221111201001101. The next prime is 221111201001149. The reversal of 221111201001143 is 341100102111122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111201001143 is a prime.

It is a super-2 number, since 2×221111201001143² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221111201001149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555600500571 + 110555600500572.

It is an arithmetic number, because the mean of its divisors is an integer number (110555600500572).

Almost surely, 2^{221111201001143} is an apocalyptic number.

221111201001143 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111201001143 is an equidigital number, since it uses as much as digits as its factorization.

221111201001143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 221111201001143 its reverse (341100102111122), we get a palindrome (562211303112265).

The spelling of 221111201001143 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred one million, one thousand, one hundred forty-three".