1220421030302 has 4 divisors (see below), whose sum is σ = 1830631545456. Its totient is φ = 610210515150.

The previous prime is 1220421030293. The next prime is 1220421030349. The reversal of 1220421030302 is 2030301240221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1220421030302² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305105257574 + ... + 305105257577.

It is an arithmetic number, because the mean of its divisors is an integer number (457657886364).

Almost surely, 2^{1220421030302} is an apocalyptic number.

1220421030302 is a deficient number, since it is larger than the sum of its proper divisors (610210515154).

1220421030302 is an equidigital number, since it uses as much as digits as its factorization.

1220421030302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610210515153.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1220421030302 its reverse (2030301240221), we get a palindrome (3250722270523).

The spelling of 1220421030302 in words is "one trillion, two hundred twenty billion, four hundred twenty-one million, thirty thousand, three hundred two".