1220201001123 has 48 divisors (see below), whose sum is σ = 1787451240960. Its totient is φ = 739967260032.

The previous prime is 1220201001091. The next prime is 1220201001133. The reversal of 1220201001123 is 3211001020221.

It is not a de Polignac number, because 1220201001123 - 2⁵ = 1220201001091 is a prime.

It is a super-2 number, since 2×1220201001123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220201001133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16669638 + ... + 16742676.

It is an arithmetic number, because the mean of its divisors is an integer number (37238567520).

Almost surely, 2^{1220201001123} is an apocalyptic number.

1220201001123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220201001123 is a deficient number, since it is larger than the sum of its proper divisors (567250239837).

1220201001123 is a wasteful number, since it uses less digits than its factorization.

1220201001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73548 (or 73535 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1220201001123 its reverse (3211001020221), we get a palindrome (4431202021344).

The spelling of 1220201001123 in words is "one trillion, two hundred twenty billion, two hundred one million, one thousand, one hundred twenty-three".