221202221047 has 2 divisors, whose sum is σ = 221202221048. Its totient is φ = 221202221046.

The previous prime is 221202220973. The next prime is 221202221087. The reversal of 221202221047 is 740122202122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221202221047 - 2¹⁵ = 221202188279 is a prime.

It is a super-2 number, since 2×221202221047² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221202221087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601110523 + 110601110524.

It is an arithmetic number, because the mean of its divisors is an integer number (110601110524).

Almost surely, 2^221202221047 is an apocalyptic number.

221202221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202221047 is an equidigital number, since it uses as much as digits as its factorization.

221202221047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 221202221047 its reverse (740122202122), we get a palindrome (961324423169).

The spelling of 221202221047 in words is "two hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, forty-seven".