1220100000123 has 16 divisors (see below), whose sum is σ = 1676713402656. Its totient is φ = 788599768320.

The previous prime is 1220100000079. The next prime is 1220100000157. The reversal of 1220100000123 is 3210000010221.

It is not a de Polignac number, because 1220100000123 - 2⁹ = 1220099999611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220100000099 and 1220100000108.

It is not an unprimeable number, because it can be changed into a prime (1220100000193) 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, 19527336 + ... + 19589717.

It is an arithmetic number, because the mean of its divisors is an integer number (104794587666).

Almost surely, 2^{1220100000123} is an apocalyptic number.

1220100000123 is a deficient number, since it is larger than the sum of its proper divisors (456613402533).

1220100000123 is a wasteful number, since it uses less digits than its factorization.

1220100000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39117374.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1220100000123 its reverse (3210000010221), we get a palindrome (4430100010344).

The spelling of 1220100000123 in words is "one trillion, two hundred twenty billion, one hundred million, one hundred twenty-three", and thus it is an aban number.