221402020001431 has 2 divisors, whose sum is σ = 221402020001432. Its totient is φ = 221402020001430.

The previous prime is 221402020001423. The next prime is 221402020001441. The reversal of 221402020001431 is 134100020204122.

221402020001431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221402020001431 - 2³ = 221402020001423 is a prime.

It is a super-2 number, since 2×221402020001431² (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 (221402020001441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110701010000715 + 110701010000716.

It is an arithmetic number, because the mean of its divisors is an integer number (110701010000716).

Almost surely, 2^{221402020001431} is an apocalyptic number.

221402020001431 is a deficient number, since it is larger than the sum of its proper divisors (1).

221402020001431 is an equidigital number, since it uses as much as digits as its factorization.

221402020001431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221402020001431 its reverse (134100020204122), we get a palindrome (355502040205553).

The spelling of 221402020001431 in words is "two hundred twenty-one trillion, four hundred two billion, twenty million, one thousand, four hundred thirty-one".