1220421041431 has 2 divisors, whose sum is σ = 1220421041432. Its totient is φ = 1220421041430.

The previous prime is 1220421041417. The next prime is 1220421041447. The reversal of 1220421041431 is 1341401240221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220421041431 - 2¹⁵ = 1220421008663 is a prime.

It is a super-2 number, since 2×1220421041431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220421041396 and 1220421041405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220421042431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610210520715 + 610210520716.

It is an arithmetic number, because the mean of its divisors is an integer number (610210520716).

Almost surely, 2^{1220421041431} is an apocalyptic number.

1220421041431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220421041431 is an equidigital number, since it uses as much as digits as its factorization.

1220421041431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1220421041431 its reverse (1341401240221), we get a palindrome (2561822281652).

The spelling of 1220421041431 in words is "one trillion, two hundred twenty billion, four hundred twenty-one million, forty-one thousand, four hundred thirty-one".