221440426619 has 2 divisors, whose sum is σ = 221440426620. Its totient is φ = 221440426618.

The previous prime is 221440426607. The next prime is 221440426631. The reversal of 221440426619 is 916624044122.

It is a balanced prime because it is at equal distance from previous prime (221440426607) and next prime (221440426631).

It is a cyclic number.

It is not a de Polignac number, because 221440426619 - 2¹² = 221440422523 is a prime.

It is a super-2 number, since 2×221440426619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221440426819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720213309 + 110720213310.

It is an arithmetic number, because the mean of its divisors is an integer number (110720213310).

Almost surely, 2^221440426619 is an apocalyptic number.

221440426619 is a deficient number, since it is larger than the sum of its proper divisors (1).

221440426619 is an equidigital number, since it uses as much as digits as its factorization.

221440426619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 221440426619 in words is "two hundred twenty-one billion, four hundred forty million, four hundred twenty-six thousand, six hundred nineteen".