1220228947392 has 224 divisors, whose sum is σ = 4207306263552. Its totient is φ = 302888042496.

The previous prime is 1220228947361. The next prime is 1220228947429. The reversal of 1220228947392 is 2937498220221.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1757068 + ... + 2351115.

It is an arithmetic number, because the mean of its divisors is an integer number (18782617248).

Almost surely, 2^{1220228947392} is an apocalyptic number.

1220228947392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220228947392 is an abundant number, since it is smaller than the sum of its proper divisors (2987077316160).

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

1220228947392 is a wasteful number, since it uses less digits than its factorization.

1220228947392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108235 (or 4108225 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 1220228947392 in words is "one trillion, two hundred twenty billion, two hundred twenty-eight million, nine hundred forty-seven thousand, three hundred ninety-two".