1222553235554 has 16 divisors (see below), whose sum is σ = 2096375611968. Its totient is φ = 523808870352.

The previous prime is 1222553235521. The next prime is 1222553235643. The reversal of 1222553235554 is 4555323552221.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11823044 + ... + 11925999.

It is an arithmetic number, because the mean of its divisors is an integer number (131023475748).

Almost surely, 2^{1222553235554} is an apocalyptic number.

1222553235554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1222553235554 is a deficient number, since it is larger than the sum of its proper divisors (873822376414).

1222553235554 is a wasteful number, since it uses less digits than its factorization.

1222553235554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23752729.

The product of its digits is 1800000, while the sum is 44.

Adding to 1222553235554 its reverse (4555323552221), we get a palindrome (5777876787775).

The spelling of 1222553235554 in words is "one trillion, two hundred twenty-two billion, five hundred fifty-three million, two hundred thirty-five thousand, five hundred fifty-four".