1220402134330 has 16 divisors (see below), whose sum is σ = 2212527612960. Its totient is φ = 484648904592.

The previous prime is 1220402134321. The next prime is 1220402134363. The reversal of 1220402134330 is 334312040221.

It is a junction number, because it is equal to n+sod(n) for n = 1220402134295 and 1220402134304.

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, 438992184 + ... + 438994963.

It is an arithmetic number, because the mean of its divisors is an integer number (138282975810).

Almost surely, 2^{1220402134330} is an apocalyptic number.

1220402134330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220402134330 is a deficient number, since it is larger than the sum of its proper divisors (992125478630).

1220402134330 is a wasteful number, since it uses less digits than its factorization.

1220402134330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877987293.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1220402134330 its reverse (334312040221), we get a palindrome (1554714174551).

The spelling of 1220402134330 in words is "one trillion, two hundred twenty billion, four hundred two million, one hundred thirty-four thousand, three hundred thirty".