1220012021123 has 16 divisors (see below), whose sum is σ = 1396337080320. Its totient is φ = 1044196920096.

The previous prime is 1220012021101. The next prime is 1220012021141. The reversal of 1220012021123 is 3211202100221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220012021123 is a prime.

It is a super-2 number, since 2×1220012021123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220012023123) 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, 30770690 + ... + 30810312.

It is an arithmetic number, because the mean of its divisors is an integer number (87271067520).

Almost surely, 2^{1220012021123} is an apocalyptic number.

1220012021123 is a deficient number, since it is larger than the sum of its proper divisors (176325059197).

1220012021123 is an equidigital number, since it uses as much as digits as its factorization.

1220012021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45946.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1220012021123 its reverse (3211202100221), we get a palindrome (4431214121344).

The spelling of 1220012021123 in words is "one trillion, two hundred twenty billion, twelve million, twenty-one thousand, one hundred twenty-three".