1222157143547 has 8 divisors (see below), whose sum is σ = 1227262808640. Its totient is φ = 1217051763840.

The previous prime is 1222157143541. The next prime is 1222157143573. The reversal of 1222157143547 is 7453417512221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222157143547 - 2²⁴ = 1222140366331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222157143498 and 1222157143507.

It is not an unprimeable number, because it can be changed into a prime (1222157143541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16792478 + ... + 16865100.

It is an arithmetic number, because the mean of its divisors is an integer number (153407851080).

Almost surely, 2^{1222157143547} is an apocalyptic number.

1222157143547 is a deficient number, since it is larger than the sum of its proper divisors (5105665093).

1222157143547 is an equidigital number, since it uses as much as digits as its factorization.

1222157143547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142693.

The product of its digits is 470400, while the sum is 44.

The spelling of 1222157143547 in words is "one trillion, two hundred twenty-two billion, one hundred fifty-seven million, one hundred forty-three thousand, five hundred forty-seven".