22001251487 has 2 divisors, whose sum is σ = 22001251488. Its totient is φ = 22001251486.

The previous prime is 22001251483. The next prime is 22001251499. The reversal of 22001251487 is 78415210022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001251487 - 2² = 22001251483 is a prime.

It is a super-2 number, since 2×22001251487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001251483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000625743 + 11000625744.

It is an arithmetic number, because the mean of its divisors is an integer number (11000625744).

Almost surely, 2^22001251487 is an apocalyptic number.

22001251487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001251487 is an equidigital number, since it uses as much as digits as its factorization.

22001251487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The spelling of 22001251487 in words is "twenty-two billion, one million, two hundred fifty-one thousand, four hundred eighty-seven".