1221014131 has 2 divisors, whose sum is σ = 1221014132. Its totient is φ = 1221014130.

The previous prime is 1221014089. The next prime is 1221014161. The reversal of 1221014131 is 1314101221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221014131 - 2¹¹ = 1221012083 is a prime.

It is a super-2 number, since 2×1221014131² = 2981751016203370322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221014161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610507065 + 610507066.

It is an arithmetic number, because the mean of its divisors is an integer number (610507066).

Almost surely, 2^1221014131 is an apocalyptic number.

1221014131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221014131 is an equidigital number, since it uses as much as digits as its factorization.

1221014131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1221014131 is about 34943.0126205512. The cubic root of 1221014131 is about 1068.8257216803.

Adding to 1221014131 its reverse (1314101221), we get a palindrome (2535115352).

The spelling of 1221014131 in words is "one billion, two hundred twenty-one million, fourteen thousand, one hundred thirty-one".