1220420023896 has 32 divisors (see below), whose sum is σ = 3055246871040. Its totient is φ = 406247099808.

The previous prime is 1220420023883. The next prime is 1220420023919. The reversal of 1220420023896 is 6983200240221.

It is a super-2 number, since 2×1220420023896² (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 in 7 ways as a sum of consecutive naturals, for example, 34955616 + ... + 34990511.

It is an arithmetic number, because the mean of its divisors is an integer number (95476464720).

Almost surely, 2^{1220420023896} is an apocalyptic number.

It is an amenable number.

1220420023896 is an abundant number, since it is smaller than the sum of its proper divisors (1834826847144).

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

1220420023896 is a wasteful number, since it uses less digits than its factorization.

1220420023896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69946863 (or 69946859 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 1220420023896 in words is "one trillion, two hundred twenty billion, four hundred twenty million, twenty-three thousand, eight hundred ninety-six".