1220022523543 has 16 divisors (see below), whose sum is σ = 1229803162560. Its totient is φ = 1210269355776.

The previous prime is 1220022523537. The next prime is 1220022523553. The reversal of 1220022523543 is 3453252200221.

It is a cyclic number.

It is not a de Polignac number, because 1220022523543 - 2¹⁷ = 1220022392471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022523553) 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, 345320205 + ... + 345323737.

It is an arithmetic number, because the mean of its divisors is an integer number (76862697660).

Almost surely, 2^{1220022523543} is an apocalyptic number.

1220022523543 is a deficient number, since it is larger than the sum of its proper divisors (9780639017).

1220022523543 is a wasteful number, since it uses less digits than its factorization.

1220022523543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 1220022523543 its reverse (3453252200221), we get a palindrome (4673274723764).

The spelling of 1220022523543 in words is "one trillion, two hundred twenty billion, twenty-two million, five hundred twenty-three thousand, five hundred forty-three".