1222145155503 has 16 divisors (see below), whose sum is σ = 1905879385600. Its totient is φ = 771881150520.

The previous prime is 1222145155499. The next prime is 1222145155519. The reversal of 1222145155503 is 3055515412221.

1222145155503 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 145 + 1 + 5 + 5 + 503 = 666.

It is not a de Polignac number, because 1222145155503 - 2² = 1222145155499 is a prime.

It is a super-2 number, since 2×1222145155503² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222145155303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191174103 + ... + 1191175128.

It is an arithmetic number, because the mean of its divisors is an integer number (119117461600).

Almost surely, 2^{1222145155503} is an apocalyptic number.

1222145155503 is a deficient number, since it is larger than the sum of its proper divisors (683734230097).

1222145155503 is a wasteful number, since it uses less digits than its factorization.

1222145155503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382349259 (or 2382349253 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 1222145155503 in words is "one trillion, two hundred twenty-two billion, one hundred forty-five million, one hundred fifty-five thousand, five hundred three".