1222345677890 has 16 divisors (see below), whose sum is σ = 2205234123840. Its totient is φ = 487824514800.

The previous prime is 1222345677887. The next prime is 1222345677913. The reversal of 1222345677890 is 987765432221.

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, 139214936 + ... + 139223715.

It is an arithmetic number, because the mean of its divisors is an integer number (137827132740).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1222345677890 = 2444691355780, but 3⋅1222345677890 = 3667037033670 is not.

Almost surely, 2^{1222345677890} is an apocalyptic number.

1222345677890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222345677890 is a deficient number, since it is larger than the sum of its proper divisors (982888445950).

1222345677890 is a wasteful number, since it uses less digits than its factorization.

1222345677890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278439097.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 1222345677890 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred seventy-seven thousand, eight hundred ninety".