1223447026860 has 72 divisors (see below), whose sum is σ = 3714960945696. Its totient is φ = 325915107840.

The previous prime is 1223447026831. The next prime is 1223447026861. The reversal of 1223447026860 is 686207443221.

It is a happy number.

1223447026860 is a `hidden beast` number, since 1 + 223 + 44 + 70 + 268 + 60 = 666.

It is a super-2 number, since 2×1223447026860² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1223447026861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3340381 + ... + 3688500.

Almost surely, 2^{1223447026860} is an apocalyptic number.

1223447026860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223447026860 is an abundant number, since it is smaller than the sum of its proper divisors (2491513918836).

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

1223447026860 is a wasteful number, since it uses less digits than its factorization.

1223447026860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7029863 (or 7029858 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 1223447026860 in words is "one trillion, two hundred twenty-three billion, four hundred forty-seven million, twenty-six thousand, eight hundred sixty".