2221421131 has 2 divisors, whose sum is σ = 2221421132. Its totient is φ = 2221421130.

The previous prime is 2221421101. The next prime is 2221421143. The reversal of 2221421131 is 1311241222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221421131 - 2⁷ = 2221421003 is a prime.

It is a super-2 number, since 2×2221421131² = 9869423682506638322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221421099 and 2221421108.

It is not a weakly prime, because it can be changed into another prime (2221421101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110710565 + 1110710566.

It is an arithmetic number, because the mean of its divisors is an integer number (1110710566).

Almost surely, 2^2221421131 is an apocalyptic number.

2221421131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221421131 is an equidigital number, since it uses as much as digits as its factorization.

2221421131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 2221421131 is about 47131.9544576713. The cubic root of 2221421131 is about 1304.7990532380.

Adding to 2221421131 its reverse (1311241222), we get a palindrome (3532662353).

The spelling of 2221421131 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, one hundred thirty-one".