1022250405551 has 2 divisors, whose sum is σ = 1022250405552. Its totient is φ = 1022250405550.

The previous prime is 1022250405439. The next prime is 1022250405559. The reversal of 1022250405551 is 1555040522201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022250405551 - 2²² = 1022246211247 is a prime.

It is a super-2 number, since 2×1022250405551² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022250405559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511125202775 + 511125202776.

It is an arithmetic number, because the mean of its divisors is an integer number (511125202776).

Almost surely, 2^{1022250405551} is an apocalyptic number.

1022250405551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022250405551 is an equidigital number, since it uses as much as digits as its factorization.

1022250405551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 1022250405551 its reverse (1555040522201), we get a palindrome (2577290927752).

The spelling of 1022250405551 in words is "one trillion, twenty-two billion, two hundred fifty million, four hundred five thousand, five hundred fifty-one".