1222345678901 has 16 divisors (see below), whose sum is σ = 1293281676288. Its totient is φ = 1153646083200.

The previous prime is 1222345678871. The next prime is 1222345678903. The reversal of 1222345678901 is 1098765432221.

It is a cyclic number.

It is not a de Polignac number, because 1222345678901 - 2¹⁰ = 1222345677877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222345678901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222345678903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1953080 + ... + 2501841.

It is an arithmetic number, because the mean of its divisors is an integer number (80830104768).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1222345678901 = 2444691357802, but 3⋅1222345678901 = 3667037036703 is not.

Almost surely, 2^{1222345678901} is an apocalyptic number.

It is an amenable number.

1222345678901 is a deficient number, since it is larger than the sum of its proper divisors (70935997387).

1222345678901 is a wasteful number, since it uses less digits than its factorization.

1222345678901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455172.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 1222345678901 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred seventy-eight thousand, nine hundred one".