1220412034545 has 128 divisors (see below), whose sum is σ = 2240383795200. Its totient is φ = 561823180800.

The previous prime is 1220412034529. The next prime is 1220412034573. The reversal of 1220412034545 is 5454302140221.

It is not a de Polignac number, because 1220412034545 - 2⁴ = 1220412034529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 138947224 + ... + 138956006.

It is an arithmetic number, because the mean of its divisors is an integer number (17502998400).

Almost surely, 2^{1220412034545} is an apocalyptic number.

1220412034545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220412034545 is a deficient number, since it is larger than the sum of its proper divisors (1019971760655).

1220412034545 is a wasteful number, since it uses less digits than its factorization.

1220412034545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 1220412034545 its reverse (5454302140221), we get a palindrome (6674714174766).

The spelling of 1220412034545 in words is "one trillion, two hundred twenty billion, four hundred twelve million, thirty-four thousand, five hundred forty-five".