1202215505420 has 24 divisors (see below), whose sum is σ = 2543080688064. Its totient is φ = 477376082816.

The previous prime is 1202215505311. The next prime is 1202215505437. The reversal of 1202215505420 is 245055122021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219379652 + ... + 219385131.

It is an arithmetic number, because the mean of its divisors is an integer number (105961695336).

Almost surely, 2^{1202215505420} is an apocalyptic number.

1202215505420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202215505420 is an abundant number, since it is smaller than the sum of its proper divisors (1340865182644).

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

1202215505420 is a wasteful number, since it uses less digits than its factorization.

1202215505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438764929 (or 438764927 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 1202215505420 in words is "one trillion, two hundred two billion, two hundred fifteen million, five hundred five thousand, four hundred twenty".