1220402302040 has 32 divisors (see below), whose sum is σ = 2745949686480. Its totient is φ = 488153008512.

The previous prime is 1220402302039. The next prime is 1220402302061. The reversal of 1220402302040 is 402032040221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2678987 + ... + 3101253.

Almost surely, 2^{1220402302040} is an apocalyptic number.

1220402302040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220402302040 is an abundant number, since it is smaller than the sum of its proper divisors (1525547384440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220402302040 is a wasteful number, since it uses less digits than its factorization.

1220402302040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494531 (or 494527 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 1220402302040 its reverse (402032040221), we get a palindrome (1622434342261).

The spelling of 1220402302040 in words is "one trillion, two hundred twenty billion, four hundred two million, three hundred two thousand, forty".