1220152344240 has 80 divisors (see below), whose sum is σ = 3904487525376. Its totient is φ = 314878022400.

The previous prime is 1220152344223. The next prime is 1220152344263. The reversal of 1220152344240 is 424432510221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1220152344240² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1220152344198 and 1220152344207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81992046 + ... + 82006925.

Almost surely, 2^{1220152344240} is an apocalyptic number.

1220152344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220152344240 is an abundant number, since it is smaller than the sum of its proper divisors (2684335181136).

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

1220152344240 is a wasteful number, since it uses less digits than its factorization.

1220152344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163999018 (or 163999012 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1220152344240 its reverse (424432510221), we get a palindrome (1644584854461).

The spelling of 1220152344240 in words is "one trillion, two hundred twenty billion, one hundred fifty-two million, three hundred forty-four thousand, two hundred forty".